Bihar Board Class 12th Model Paper 2026 Physics

iz'u iqfLrdk Øekad / Question Booklet Serial No. :

INTERMEDIATE EXAMINATION – 2026
bUVjehfM,V ijh{kk & 2026
¼ANNUAL@okf"kZd ½ iz'u iqfLrdk lsV
dksM
fo"k; dksM MODEL QUESTION PAPER Question Booklet Set

Subject Code:
117 PHYSICS (Elective)
Code

HkkSfrd 'kkL= ¼,sfPNd½
I.Sc. (THEORY/lS)kfUrd)
dqy iz'u % 70 $ 20 $6 ¾ 96 dqy eqfnzr i`"B % 30
Total Questions: 70 + 20 + 6 = 96 Total Printed Pages : 30
¼le; % 3 ?kaVs 15 feuV½ ¼iw.kkZd % 70½
[Time : 3 Hours 15 Minutes] [Full Marks : 70]

ijh{kkfFkZ;ksa ds fy, funsZ'k @ Instructions for the candidates:

1- ijh{kkFkhZ OMR mÙkj i=d ij viuk iz'u iqfLrdk Øekad ¼10 vadksa dk½ vo'; fy[ksaA
Candidates must enter his / her Question Booklet Serial No. (10 Digits) in the OMR
Answer Sheet.

2- ijh{kkFkhZ ;FkklaHko vius 'kCnksa esa gh mÙkj nsaA
Candidates are required to give their answer in their own words as far as practicable.

3- nkfguh vksj gkf'k;s ij fn;s gq, vad iw.kkZad fufnZ"V djrs gSaA
Figures in the right-hand margin indicate full marks.

4- iz'uksa dks /;ku iwoZd i<+us ds fy, 15 feuV dk vfrfjä le; fn;k x;k gSA
An extra time of 15 minutes has been allotted to read the questions carefully.

5- ;g iz'u i= nks [k.Mksa esa gS & [k.M *v^ ,oa [k.M *c^A
This question booklet is divided into two sections – Section ‘A’ and Section ‘B’.

Page 1 of 30

6- [k.M Þvß esa 70 oLrqfu"B iz'u gSa ftuesa 35 iz'u vfuok;Z gSA ;fn ijh{kkFkhZ 35 ls vf/kd iz'uksa ds
mÙkj nsrs@nsrh gSa] rks izFke 35 mÙkjksa dk gh ewY;kadu fd;k tk;sxkA izR;sd iz'u ds fy, 1 vad
fu/kkZfjr gSA buds mÙkj nsus gsrq OMR mÙkj&i=d ij lgh fodYi dks dkys@uhys ckWy isu ls
izxk<+ djsaA fdlh Hkh izdkj ds OgkbVuj@ rjy inkFkZ@ CysM@uk[kwu vkfn dk OMR mÙkj i=d
esa iz;ksx ugha djsa vU;Fkk ijh{kk ifj.kke vekU; gksxkA
In Section – A there are 70 objective type questions out of which 35 questions are to be
answered. If the candidates answer more than 35 questions, the first 35 questions only will
be evaluated. Each question carries 1 mark. For answering these darken the circle with
blue/black ball pen against the correct option on OMR Answer Sheet. Do not use
whitener/liquid/ blade/ nail etc on the OMR Answer Sheet otherwise the result will be
invalid.

7- [k.M *c^ esa 20 y?kq mÙkjh; iz'u gSaA izR;sd iz'u ds fy, 2 vad fu/kkZfjr gSa] ftuesa ls fdUgha 10
iz'uksa dk mÙkj nsuk vfuok;Z gSA blds vfrfjä bl [k.M esa 6 nh?kZ mÙkjh; iz'u fn;s x;s gSa]
ftuesa ls fdUgha 3 iz'uksa dk mÙkj nsuk vfuok;Z gSA izR;sd ds fy, 5 vad fu/kkZfjr gS]

In Section-B there are 20 short answer type questions. Each question carries 2 marks. Out
of which any 10 questions are to be answered. Apart from these, there are 6 long answer
type questions out of which any 3 questions are to be answered. Each questions carries 5
marks,

8- fdlh izdkj ds bysDVªkWfud midj.k dk iz;ksx iw.kZr;k oftZr gSA
Use of any electronic appliances is strictly prohibited.

Page 2 of 30

[k.M & v @ Section-A
oLrqfu"B iz'u @ Objective Type Questions
iz'u la[;k 1 ls 70 rd ds izR;sd iz'u ds lkFk pkj fodYi fn;s x;s gSa] ftuesa ls ,d lgh
gSA fdUgha 35 iz'uksa dk mÙkj nsaA vius }kjk pqus x;s fodYi dks OMR 'khV ij fpfàr djsaA
35 x 1 = 35
Question Nos 1 to 70 have four options, out of which only one is correct, You have to mark your
selected option on the OMR Sheet. Answer any 35 questions. 35 x 1 = 35

1- ijkoS|qrkad dk S.I. ek=d gksrk gSA

(A)

 
  (B)
²²

(C)

  (D)  

 


SI unit of permittivity is

(A)

 
  (B)
²²

(C)

  (D)  

 


2- vkosf'kr la/kkfjr dh nksuks ifê;ksa ds dqy vkos'k dk ;ksx gksrk gSA

(A) 'kwU; (B) 1


(C) 1 C (D) vuar

Sum of Charges on two plates of a charged Capacitor is

(A) Zero (B) 1


(C) 1 C (D) infinite

3- /kkjkokgh pkyd ds vanj bysDVªku dh xfr gksrh gS&

(A) le:i (B) Rofjr

(C) viokgh (D) voeafnr

Page 3 of 30

The motion of electron inside a current Carrying Conductor is

(A) uniform (B) accelerating

(C) drifting (D) decelerating

4- ok;q esa fLFkr bdkbZ /ku vkos'k dks ?ksjus okyh lrg ls fudyusokyh laiw.kZ fo|qr ¶yDl

dk eku gS
(A) 
(B) 


(C) 4
 (D) 4


The total electric flux Coming out from a closed Surface enclosing a stationary unit positive
charge in air is.

(A) 
(B) 


(C) 4
 (D) 4


5- fcUnq vkos'k ls
nwjh ij fo|qr foHko dk eku gksxkA

(A) ‘
’ ds vuqØekuqikrh (B)
ds O;qRqØekuqikrh

(C)
(D)

ଶ ଶ
ds vuqØekuqikrh ds O;qRqØekuqikrh

The value of electric potential at a distance
from a point charge will be

(A) proportional to
(B) Inversely proportional to


(C) proportional to
(D) Inversely proportional to

ଶ ଶ

6- 64 le:i cw¡ns ftuesa izR;sd dh /kkfjrk 5 F gS feydj ,d cM+h cw¡n cukrh gSA cM+s cw¡n

dh /kkfjrk gksxh &

(A) 4  F (B) 20  F

(C) 25 F (D) 164 F

Page 4 of 30

64 identical drops each of Capacity 5  F Combine to form a big drop. Capacity of the big drop

will be -

(A) 4  F (B) 20  F

(C) 25 F (D) 164 F

7- fo|qr {ks= js[kkvksa ls tkudkjh izkIr gksrh gS &

(A) {ks= dh 'kfä (B) fn'kk dh

(C) vkos'k dh izd`fr (D) buesa ls lHkh

Electric field lines provide information about

(A) Field Strength (B) direction

(C) Nature of charge (D) All of these

8- /kkrq ds vkosf'kr xksys ds i`"B ls xksys ds dsUnz dh vksj tkus ij oS|qr {ks=

(A) ?kVrk gSA (B) c<+rk gSA

(C) mruk gh jgrk gS ftruk i`"B ij gSA (D) loZ= 'kwU; jgrk gSA

On moving from the surface of a charged metallic Sphere to the centre of sphere, the electric field

(A) decreases (B) increases

(C) remains same as at the surface (D) Zero at all places

9- foHkoekih ls eq[;r% ekih tkrh gS &

(A) /kkjk (B) izfrjks/k

(C) foHkokUrj (D) buesa ls lHkh

Potentiometer is mainly used to measure:

(A) Current (B) resistance

(C) potential difference (D) All of these

Page 5 of 30

10- vxj nks vkos'kksa ds chp dh nwjh c<+kbZ tkrh gS] rks mudh oS|qr LFkSfrt mtkZ &

(A) ?kVrh gS (B) c<+rh gS

(C) ?kV ldrh gS ;k c<+ ldrh gS (D) leku jgrh gS

When the separation between two charges is increased, the electric potential energy of the system
of charges

(A) will decrease (B) will increase

(C) may increase or decrease (D) will remain same

11- ,d rkj dk izfrjks/k R gSA bls [khapdj O;kl vk/kk dj fn;k tk;] rks rkj dk izfrjks/k

gksxk &
(A) 2R (B) 4R

(C) 8R (D) 16R

The resistance of a wire is R. If the diameter of the wire is halved by streching it, then the
resistance of the wire will become.

(A) 2R (B) 4R

(C) 8R (D) 16R

12- pkyd inkFkZ ls cus vlhfer vkosf'kr iryh pknj dh lrg ds fudV fLFkr fdlh fcUnq
ij fo|qrh; {ks= dk eku gksrk gS&

(A) ϵo 

(B)

(D) 
 
೚ 
(C)

The value of the electric field at a point near the surface of infinite uniformly charged thin
Conductor Sheet is

(A) ϵo 

(B)

(D) 
 
೚ 
(C)

Page 6 of 30

13- C₁=2 F vkSj C2=4 F ds nks la/kkfj=ksa dh Js.kh Øe esa tksM+k tkrk gS vkSj muds fljksa ds

chp 1200 cksYV dk foHkokUrj vkjksfir fd;k tkrk gSA 2 F okys la/kfj= ds fljksa ds chp
dk foHkokUrj gksxkA
(A) 400V (B) 600V

(C) 800V (D) 900V

Two Capacitors C1=2 F and C₂=4 F are connected in series and a potential difference of 1200V

is applied across it. The potential difference across 2 F will be :

(A) 400V (B) 600V

(C) 800V (D) 900V

14- izHkkoh /kkfjrk 5 F dks izkIr djus ds fy, flQZ 2 F ds de ls de fdrus la/kkfj= dh

vko';drk gksxh \
(A) 4 (B) 3

(C) 5 (D) 6

Minimum number of Capacitors of 2F each required, to obtain a capacitance of 5 F will be

(A) 4 (B) 3

(C) 5 (D) 6

15- ;fn 100V rd vkosf'kr ij ,d la/kkfj= dh lafpr ÅtkZ 1 twy gks] rks la/kkfj= dh

/kkfjrk gksxh
(A) 2 × 10  (B) 2 × 10
 

(C) 2 × 10  (D) 2 × 10
 

(A) 2 × 10  (B) 2 × 10
 
The stored energy of a capacitor charged to 100V is 1 joule. Capacitance of the Capacitor is

(C) 2 × 10  (D) 2 × 10
 

Page 7 of 30

16- ,d rkj esa 1A /kkjk izokfgr gks jgh gSA ;fn bysDVªkWu dk vkos'k 1.6 × 10
  gks] rks izfr

lsds.M rkj esa izokfgr bysDVªkuksa dh la[;k gS
(A) 0.625×1013 (B) 0.625×1018

(C) 1.6 × 10-19 (D) 1.6 × 1019

The current flowing in a wire is 1A. If the charge of an electron is 1.6 ×10-19C, then the number
of electrons flowing through the wire per second is

(A) 0.625×1013 (B) 0.625×1018

(C) 1.6 × 10-19 (D) 1.6 × 1019

ଵ
  ଶ
ଶ ௢
17- ds foeh; lw= ds lerqY; foEkk dh jkf'k gS&


 


మ

 ೚ 
(A) (B)

(D)  
మ
బ 
 
(C)

ଵ
  ଶ
ଶ ௢
The dimensional formula for is idential to that of


 


మ

 ೚ 
(A) (B)

(D)  
మ
బ 
 
(C)

18- fdlh pkyd dk laogu osx¼  ½ rFkk vkjksfir fo|qr {ks=¼E½ ds chp lEcU/k gS

(A)  ∝√ (B)  ∝


(C)  ∝ (D)  ∝ 

The drift velocity (Vd) and applied electric field (E) of a Conductor are related as

(A)  ∝√ (B)  ∝


(C)  ∝ (D)  ∝ 

Page 8 of 30

19- fuEufyf[kr esa /kkjk ?kuRo ds fy, dkSu lgh gS \

(A) ⃗ =  v⃗ (B) ⃗ =
v⃗೏

⃗೏
(C) ⃗=  v⃗ (D) ⃗ =

Which of the following is Correct for current density?

(A) ⃗ =  v⃗ (B) ⃗ =
v⃗೏

⃗೏
(C) ⃗=  v⃗ (D) ⃗ =

20- fuEufyf[kr esa dkSu fddZgkQ ds izFke fu;e esa lajf{kr jgrk gS \

(A) mtkZ (B) cy

(C) vkos'k (D) foHko

Which of the following is conserved in Kirchoff's first law?
(A) Energy (B) Force
(C) Charge (D) Potential

21- 6 F /kkfjrk ds rhu la/kkfj= miyC/k gSA muds la;kstu ls izkIr U;wure ,oa vf/kdre

/kkfjrk gksxh&

(A) 3 F, 12  F (B) 2 F, 12 F

(C) 2 F, 18F (D) 6 F, 18 F

Three Capacitors each of capacitance 6
F are available. The minimum and maximum
capacitance, which may be obtained by their Combination will be:

(A) 3 F, 12  F (B) 2 F, 12 F

(C) 2 F, 18F (D) 6 F, 18 F

Page 9 of 30

22- vkos'k dk ifjek.khdj.k n'kkZrk gS fd &

(A) vkos'k] tks ,d bysDVªku ij vkos'k dk ,d va'k gS] laHko ugha gSA

(B) ,d vkos'k dks u"V ugha fd;k tk ldrk

(C) d.kksa ij vkos'k gksrk gS

(D) ,d d.k ij U;wure vuqes; vkos'k gksrk gSA

Quantisation of Charge indicate that:
(A) charge, which a fraction of charge on an electron, is not possible.

(B) A Charge cannot be destroyed

(C) Charge exists on particles

(D) Then exists a minimum permissible charge on a particle.

23- fdlh cUn ifjiFk dk izfrjks/k 10 vkse gSA bl ifjiFk ls t le;¼lsdsUM½ esa pqEcdh;

¶yDl Φ = 6  − 5 + 1 ls ifjofrZr gksrk gSA t = 0.25 lsds.M ij ifjiFk esa izokfgr /kkjk
¼,fEi;j esa½ gksxh
(A) 0.4 (B) 0.2

(C) 2.0 (D) 4.0

In a closed Circuit of resistance 10Ω, the linked flux varies with time according to the relation
Φ 6  5 + 1. At t = 0.25 second the current (in ampere) flowing through the circuit is a
(A) 0.4 (B) 0.2

(C) 2.0 (D) 4.0

24- fo|qrh; ifjiFk ds fdlh fcUnq ij lHkh /kkjkvksa ds chtxf.krh; ;ksx gksrk gS &

(A) 'kwU; (B) vuar

(C) /kukRed (D) _.kkRed

Page 10 of 30

In an electric circuit algebraic sum of all current at a point is -

(A) Zero (B) Infinite

(C) Positive (D) Negative

25- vkos'k A ,oa B ,d nwljs dks vkdf"kZr djrs gSa rFkk B vkSj C Hkh ,d nwljs dks vkdf"kZr

djrsa gSaA rc A ,oa C &
(A) vkd`"V gksaxs (B) izfrdf"kZr gksaxs

(C) ,d nwljs dks izHkkfor ugha djsaxsA (D) buesa ls lHkh

Charges A and B attract each other, Charges B and C also attract each other. Then A and C:

(A) will attract each other (B) will repel each other

(C) will not affect each other (D) All of these

26- fdlh izR;korhZ ifjiFk esa I=5 Cos wt ,fEi;j rFkk foHko V = 200 Sin wt oksYV gSA ifjiFk

esa 'kfä gkfu gSA
(A) 20 w (B) 40 w

(C) 1000 w (D) 'kwU;

In A.C. circuit, the current and voltage are given by I = 5 Cos t and V = 200 Sin wt
respectively Power loss in the circuit is
(A) 20 w (B) 40 w

(C) 1000 w (D) Zero

27- ,d izR;korhZ /kkjk I=60 Sin100πt esa /kkjk ds ewy ek/; oxZ dk eku gS]

(A) 60 √2 (B) 30 √2

(C) 100 (D) 'kwU;

Page 11 of 30

The root mean square (rms) valve of alternating current I=60 Sin100πt is

(A) 60 √2 (B) 30 √2

(C) 100 (D) Zero

28- nks vkos'k ‘Q’ dks feykusokyh js[kk ds chp esa ,d vkos'k ‘q’ j[kk tk,] rks vkos'kksa ds bl

O;oLFkk esa larqyu ds fy, ‘q’ dk eku gksxk&

(A) 2 (B) −


(C) −4 (D) + 

A charge ‘q' placed at the Centre on the line joining two charges ‘Q’ will be in equilibrium if ‘q’

(A) 2
will be equal to

(B) −


(C) −4 (D) + 

⃗ ds chp dks.k dk eku fdruk gksxk
29- fo|qrh; f}/kqzo vk/kw.kZ ⃗ ,oa fo|qr {ks= dh rhozrk 

fd f}/kqzo fLFkj lkE;koLFkk fLFkfr esa jgs \

(B) π

(A)



(C) (D) 0

What is the angle between the electric dipole moment ⃗ and the electric field Strength ⃗, so that
the electrical dipole is in stable equilibrium?


(B) π

(A)



(C) (D) 0

Page 12 of 30

30- fdlh fo|qr pqEcdh; fofd.kZ dh ÅtkZ 13-2 Kev gSA ;g fod.kZ fdl {ks= ls lacaf/kr gS

\
(A) n`'; izdk'k (B) X- fdj.k

(C) ijkcSaxuh (D) vojDr

The energy of an electromagnetic radiation is 13.2kev. This radiation is related to which region
of spectrum?

(A) Visible (B) X-rays

(C) Ultra Violet (D) Infrared

31- ijukfydk esa pqEcdh; mtkZ ?kuRo dk lw= gS

మ
(A)  (B) 
೚ ೚

 ೚

(C) మ (D)
೚

The formula for magnetic energy density for a solenoid is
మ

 ೚  ೚
(A) (B)

 ೚
 ೚
(C) మ
(D)

32- fuEufyf[kr esa ls fdl oS|qr pqEcdh; fofdj.k dk rjaxnS/;Z U;wure gS \

(A) ijkcSaxuh (B) ,Dl&fdj.ksa

(C) lw{e rjaxs (D) xkek fdj.ksa

Which one of the following electromagnetic radiations has minimum wavelength?

(A) Ultraviolet (B) X-rays

(C) Microwaves (D)
-rays

Page 13 of 30

33- (R-C) ifjiFk dh izfrck/kk gksrh gS&

(A)  +  (B)  + మ


(C)  (D) 
 
 

Impedance of (R-c) Circuit is

(A)  + () (B)  +

మ

√ √
 
(C) (D)

34- fuEufyf[kr esa ,d vkn'kZ LC lfdZV esa nksyu dh dks.kh; vko`fr ds fy, dkSu lgh gS \

(A) √. 

√.
(B)

(C)  (D) 
 
 

(A) √. 
Which of the following is correct for angular frequency of oscillation for an ideal LC Circuit?

√.
(B)

(C)  (D) 
 
 

35- Üka`[kyk L-C-R lfdZV esa fo|qr vuqukn ds fy, dkSu lgh gS \

(A)  >  (B)  < 

(C)  =  (D)  ≫ 

(A)  >  (B)  < 
Which is Correct for electrical resonance in series L-C-R Circuit?

(C)  =  (D)  ≫ 

Page 14 of 30

36- pksd daqMyh dk 'kfä xq.kkad gS &


(B) 1

(A)

(C) 0 (D) 2

The power factor of Choke Coil is:


(A) (B) 1

(C) 0 (D) 2

37- nks lsyksa dks ftudk fo|qr okgd cy ,oa  rFkk vkarfjd izfrjks/k Øe'k%
 ,oa



gS] lekukUrj Øe esa tksM+k x;k gSA la;kstu dk rqY; fo|qr okgd cy gksxk &
భ భ మ మ భ మ మ భ
భ మ భ మ
(A) (B)

భ మ
(D)   + 

(C)

Two cells having electro-motive force E1 and E2 and internal resistance r1, and r2 are connected in
parallel Combination. Equivalent electro-motive force will be-
భ భ మ మ భ మ మ భ
భ మ భ మ
(A) (B)

(C) భ మ

(D)   + 

38- fdlh py dq.M /kkjkekih ds fo{ksi θ ,oa mlesa izokfgr /kkjk esa lacaU/k gSA

(A)
∝ 
 (B)
∝

(C)
∝ (D)
∝
 


In any moving Coil galvanometer, the relation between deflection  and current flowing through
it is

(A)
∝ 
 (B)
∝

(C)
∝ (D)
∝
 


Page 15 of 30

39- D;wjh rki ds Åij ykSg&pqEcdh; inkFkZ gks tkrs gSa

(A) vuqpqEcdh; (B) izfrpqEcdh;

(C) v)Zpkyd (D) fo|qrjks/kh

Above Curie-temperature, ferromagnetic material becomes

(A) Paramagnetic (B) Diamagnetic

(C) Semiconductor (D) Insulator

40- i`Foh ds pqEcdh; /kzqoksa ij ufr dks.k gksrk gS

(A) 0° (B) 45°

(C) 60° (D) 90°

The angle of dip at magnetic poles of the earth is

(A) 0° (B) 45°

(C) 60° (D) 90°

41- ;fn izR;korhZ /kkjk vkSj fo|qr okgd cy ds chp ф dkykUrj gks] rks 'kfä xq.kkad dk

eku gksrk gS
(A) 
ф (B) !
ф

(C) "!  ф (D) "!ф

If ф is the phase-difference between alternating current and electromotive force, then power
factor is

(A) 
ф (B) !
ф

(C) "!  ф (D) "!ф

42- izfr?kkr dk ek=d gSA

(A) vkse (B) Egks

(C) QSjkM+ (D) ,sfEi;j

Page 16 of 30

Unit of reactance is

(A) ohm (B) mho

(C) farad (D) ampere

43- fuEufyf[kr esa ls fo|qr pqEcdh; o.kZØe esa dkSu ugha gS \

(A) # - fdj.ksa (B) X - fdj.ksa

(C) $ - fdj.ksa (D) lw{e fdj.ksa

Which of the following is not in electromagnetic Spectrum?

(A) #- rays (B) X - rays

(C) $- rays (D) Microwave rays

44- ;fn dk¡p&ok;q dk Økafrd dks.k gks] rks ok;q ds lkis{k dk¡p dk vioÙkZukad gksxk
(A) Sin (B) "!%

(C) &


 మ 
(D)

If  is Critical angle for glass to air, the refractive index of air with respect to glass will be

(A) Sin (B) "!%

(C) &


 మ 
(D)

45- ,d ysal ¼vioÙkZukad ¾ 1-5½ dh ok;q esa Qksdl nwjh 20lseh gSA 1-5 vioÙkZukad okys

ek/;e esa ml ysal dh Qksdl nwjh gksxh
(A) 120 lseh (B) 40 lseh

(C) 10 lseh (D) ∞

Page 17 of 30

The Focal length of a lens (refractive index 1.5) in air is 20 cm. The focal length of that lens in
medium of refractive index 1.5 is

(A) 120 cm (B) 40 cm

(C) 10 cm (D) ∞

46- vxj 4 Mk;ksIVj {kerk dk vfHklkjh ysal ,d ljy lw{en'khZ ds leku bLrseky fd;k

tk,] rks bldh vko/kZu {kerk gksxh
(A) 4 (B) 2

(C) 5 (D) 1

A Convex lens of 4 dioptre power is used as simple microscope, it's magnifying power will be

(A) 4 (B) 2

(C) 5 (D) 1

47- fdlh oLrq dk euq"; dh vk¡[k ds jsfVuk ij cuk izfrfcac gksrk gS

(A) dkYifud] lh/kk (B) okLrfod] lh/kk

(C) dkYifud] mYVk (D) okLrfod] mYVk

The image of anybody formed at the retina of human eye is

(A) virtual, erect (B) real, erect

(C) Virtual, inverted (D) real, inverted

48- rjaxnS/;Z ds c<+us ds lkFk vioÙkZukad dk eku \

(A) c<+rk gS (B) ?kVrk gS

(C) vifjofrZr jgrk gS (D) buesa ls dkbZ ugha
With the rise of wavelength, the value of refractive index
(A) increases (B) decreases
(C) remains unchanged (D) None of these

Page 18 of 30

49- nks dyk&lEcU/k lzksrksa ds dkj.k izdk'k ds O;frdj.k esa fÝt dh pkSM+kbZ gksrh gS

(A) rjaxnS/;Z ds vuqØekikrh (B) rjaxnS/;Z ds O;qRqØekuqikrh

(C) rjaxnS/;Z ds oxZ ds vuqØekikrh

(D) rjaxnS/;Z ds oxZ ds O;qRqØekuqikrh

The width of fringe in interference of light due to two coherent phase Sources is

(A) proportional to wavelength (B) inversely proportional to wavelength

(C) proportional to square of wavelength

(D) inversely proportional to square of wavelength

50- rh{.k lh/kh dksj ls izkIr foorZu fÝtsa

(A) leku pkSM+kbZ dh gksrh gSA (B) leku pkSM+kbZ dh ugha gksrh gSA

(C) T;kferh; Nk;k esa curh gSA (D) blesa ls dksbZ dFku lgh ugha gSA

Diffraction -fringes obtained from sharp straight edge

(A) are of equal width (B) are of not equal width

(C) form in geometrical shadow (D) None of these statements is correct

51- Ýsuy nwjh ZF dk eku gksrk gS] tgk¡ a izdk'k&fdj.k dh pkSM+kbZ vkSj  izdk'k dk rjaxnS/;Z
gS
௔ ௔మ
ఒ ఒ
(A) (B)

ఒ ఒ
௔ ௔మ
(C) (D)

The value of Fresnel distance ZF is, where a is width of light ray and  is wavelength of light
௔ ௔మ
ఒ ఒ
(A) (B)

ఒ ఒ
௔ ௔మ
(C) (D)

Page 19 of 30

52- dk¡p dh ,d ifêdk ij izdk'k&fdj.k 60Œ ds dks.k ij vkifrr gksrh gSA ;fn ijkofrZr

rFkk viofrZr fdj.ksa ijLij yEcor~ gksa] rks inkFkZ dk viorZukad gSaA

(B) √3
√

(A)
 
√ 
(C) (D)

A ray of light is incident on a glass plate at an angle of 60°. If reflected and refracted rays are normal to
each other, then refractive index of the material is

(B) √3
√

(A)
 
√ 
(C) (D)

53- W dk;Z Qyu okyh /kkrq ij  vko`fr dk izdk'k vkifrr gksrk gSA mRlftZr QksVks &

bysDVªku dh egÙke xfrt mtkZ gksxh
(A) = ℎ (B) = ℎ


= ℎ −  =


(C) (D)

A light of Frequency  is incident on metal of work function W. The maximum kinetic energy of
emitted photo electrons will be

(A) = ℎ (B) = ℎ


= ℎ −  =


(C) (D)

54- fuEu esa ls dkSu lk QksVksu ds laosx dks O;ä djrk gS \


(A) ℎ (B) మ




! !
(C) (D)

Page 20 of 30

Which of the following represents momentum of photon?


(A) ℎ (B) మ




! !
(C) (D)

55- gkbMªkstu ds fy, cksj dh LFkk;h d{kk dh f=T;k ‘r’ gSA cksj dh f}rh; d{kk dh f=T;k
gS
௥
ଶ
(A) r (B)

(C) 2r (D) 4r

The radius of Bohr's Stable orbit for hydrogen is ‘r’: The radius of Bohr's Second orbit is

௥
ଶ
(A) r (B)

(C) 2r (D) 4r

56- fdlh fcUnqor lzksr ls ifjfer nwjh ij rjaxkxz gksrk gS \

(A) xksykdkj (B) csyukdkj

(C) lery (D) o`Ùkkdkj

The wave front due to a point source at a finite distance from the Source is

(A) spherical (B) cylindrical

(C) Plane (D) Circular

57- fuEu esa ls dkSu 'kSfFkY; iznf'kZr djrk gS \

(A) vuqpqEcdh; inkFkZ (B) ykSgpqEcdh; inkFkZ

(C) izfrpqEcdh; inkFkZ (D) buesa ls dksbZ ugha

Which of the following shows hysteresis?
(A) Paramagnetic materials (B) Ferro magnetic materials
(C) Diamagnetic materials (D) None of these

Page 21 of 30

58- fuEufyf[kr esa dkSu jkf'k izdk'k ds vioÙkZu esa ugha cnyrh gS \

(A) pky (B) rjax&yackbZ

(C) vko`fr (D) ek/;e

Which of the following quantities docs not change in refraction of light?

(A) Speed (B) Wavelength

(C) Frequency (D) Medium

59- pqEcdh; ;kE;ksÙkj ,oa HkkSxksfyd ;kE;ksÙkj ds chp dk dks.k dgykrk gS \

(A) ueu dks.k (B) f}d~ikr

(C) pqEcdh; {ks= dk {kSfrt ?kVd (D) vkHkklh ueu dks.k

The angle between magnetic meridian and geographical meridian is called

(A) Angle of dip (B) Declination

(C) Horizontal Component of magnetic field (D) Apparent angle of dip

60- d{kk esa bysDVªku dh mtkZ lekuqikrh gksrh gS

(A) Z (B) Z2

(C) Z-1 (D) Z-2

tgk¡ Z = ijek.kq Øekad
Energy of electron in orbit is proportional to

(A) Z (B) Z2

(C) Z-1 (D) Z-2
Where Z= atomic number

61- ukfHkd dh izfr U;wfDyvkWu vkSlr cU/ku ÅtkZ gksrh gS

(A) 8 eV (B) 8 MeV

(C) 8 BeV (D) 8 twy

Page 22 of 30

Average binding energy per nucleon of nucleus is

(A) 8 eV (B) 8 MeV

(C) 8 Bev (D) 8 Joule

62- n'kfed la[;k ¼8½10 dh f}vk/kkjh la[;k gksrh gS

(A) ¼8½10 ¾ ¼101½2 (B) ¼8½10 ¾ ¼110½2

(C) ¼8½10 ¾ ¼100½2 (D) ¼8½10 ¾ ¼1000½2

Binary number of decimal number (8)10

(A) (8)10 =(101)2 (B) (8)10 =(110)2

(C) (8)10 =(100)2 (D) (8)10 =(1000)2

63- f}vk/kkjh ;ksx esa ¼1$1½ gksrk gS

(A) 1 (B) 0

(C) 10 (D) 100

In binary number (1+1) is

(A) 1 (B) 0

(C) 10 (D) 100

64- fuEufyf[kr esa dkSu OR xsV dk cqfy;u O;atd gS \

(C) ' = )())))))) ))))
(D) ' = )(.
(A) Y = A+B (B) Y = A.B

+ 

Which of the following is the Boolean expression OR gate?

(C) ' = )())))))) ))))
(D) ' = )(.
(A) Y = A+B (B) Y = A.B

+ 

Page 23 of 30

65- rsth ls pyus okyh −fdj.ksa gSa

(A) QksVkWu (B) izksVkWu

(C) bysDVªku (D) U;wVªkWu

Fast moving $-rays are

(A) photons (B) protons

(C) electrons (D) neutrons

66- fuEu esa ls dkSu ?kVuk,¡ izdk'kdh; rUrq esa iz;qä gksrk gS \

(A) iw.kZ vkUrfjd ijkorZu (B) izdh.kZu

(C) foorZu (D) viorZu

Which one of the following phenomenon is used in optical fibre?

(A) Total internal reflection (B) Scattering

(C) Diffraction (D) Refraction

67- fdlh v)Zpkyd dh rkieku xq.kkad dk eku gksrk gS

(A) /kukRed (B) _.kkRed

(C) 'kwU; (D) vuUr

The temperature coefficient of a Semi-Conductor is

(A) Positive (B) Negative

(C) Zero (D) Infinity

68- p&Vkbi v)Zpkyd oS|qr :i ls gksrk gS

(A) /kukRed vkosf'kr (B) mnklhu

(C) _.kkRed vkosf'kr (D) buesa ls dksbZ ugha

Page 24 of 30

p-type Semiconductor is electrically

(A) positive charged (B) Neutral

(C) negative charged (D) None of these

69- iw.kZ&rjaxh fn"dj.k esa] ;fn fuos'k vko`fr 50Hz gS] rks fuxZe vko`fÙk dk D;k gksxk\

(A) 25 (B) 50

(C) 100 (D) 200

In full wave rectification of input frequency is 50, then what will be output frequency?

(A) 20 (B) 50

(C) 100 (D) 200

70- ,d v)Zpkyd dks T1K ls T2K rki ij BaMk fd;k tkrk gS] rks bldk izfrjks/k

(A) c<+sxk (B) ?kVsxk

(C) fu;r jgsxk (D) igys ?kVsxk fQj c<+sxk

A semiconductor is cooled farm T1K to T2K, then its resistance will

(A) increase (B) decrease

(C) remain constant (D) first decreases then increase

Page 25 of 30

[k.M & c @ Section-B
y?kq mÙkjh; iz'u @ Short Answer Type Questions
iz'u la[;k 1 ls 20 rd ds y?kq mÙkjh; gSA fdUgh 10 iz'uksa ds mÙkj nsaA izR;sd iz'u ds fy,
2 vad fu/kkZfjr gSaA 10 x 2 = 20
Question Nos 1 to 20 are short Answer Type. Answer any 10 questions. Each question carries 2
marks. 10 x 2 = 20

1- (i) ,d fcUnq vkos'k Q > 0 rFkk ¼ii½ md fcUnq vkos'k Q < 0 ds fy, lefoHko i`"B [khafp,A
1$1
Draw the equipotential surface for (i) A point Charge Q > 0 and (ii) a point charge Q < 0

2- /kkjk ?kuRo rFkk eqä bysDVªkuksa ds vuqxeu osx ls vki D;k le>rs gSa \ vuqxeu osx
rFkk /kkjk ?kuRo ds chp lEcU/k fy[ksa \ 1$1
What do you understand by current density and drift velocity of free electrons? Write down the
relation between drift velocity and current density.

3- dwykWe ds fu;e dks lfn'k :i esa fy[ksaA 2
Write vector form of Coulomb's law.

4- fo|qr&pqacdh; rjax ds nks xq.kksa dks fy[ksa \ 2
Write down two properties of electromagnetic wave?

5- izkFkfed ,oa f}rh;d banz/kuq"k esa varj Li"V djsaA 2
Differentiate between primary and secondary rainbow.

6- ijek.kq ds cksj ekWMy dh nks dfe;ksa dk mYys[k djsaA 2
Describe the two Shortcomings of Bohr model of atom.

Page 26 of 30

7- izR;korhZ /kkjk ifjiFk esa izfr?kkr ,oa izfrck/kk D;k gS \ 2
What are reactance and impedance in alternating current circuit?

8- ek/;e A esa izdk'k dk osx V gS rFkk ek/;e B esa izdk'k dk osx 2V gSA ;fn ek/;e A

dk virÙkZukad  A rFkk ek/;e B dk virÙkZukad  B] gks rks ߤಲ dk eku D;k gksxk \ 2
ߤ
ಳ

Velocity of light in medium A is V and velocity of Light in medium B is 2V. If refractive index

of medium A is A and refractive index of medium B is  B, then what will be value of ߤ஻ ?
ߤ஺

9- fdlh LFkku ij i`Foh ds pqEcdh; {ks= ds {kSfrt ?kVd dk eku mnzx ds eku dk √3 xq.kk
gSA ml LFkku ij ^ueu dks.k^ dk eku D;k gksxk \ 2
At a place Horizontal Component of Earth's magnetic field is √3 times its vertical component
value. What is the value of angle of Dip'at that place?

10- Hk¡oj /kkjk,¡ D;k gS \ buds nks vuqiz;ksx fy[ksaA 2
What are eddy currents? Write down its two uses.

11- ystj fdj.kksa ds nks izeq[k fo'ks"krk,¡ fy[ksaA 2
Write two main features of LASER rays.

12- nh&ckXys rajx D;k gS \ bldh rjaxnS/;Z dk O;atd fy[ksaA 2
What i's de-Broglie wave? Write an expression for its wavelength.

13- ,d jsfM;ks ,fDVo inkFkZ dk {k;&fu;rkad 5-2 × 10&3 izfr o"kZ gSA mldh v/kZ&vk;q D;k

gksxh \ 2
The decay Constant of a radioactive substance is 5.2 x10-3 per year. What will be its half-Life?

14- foHkoekih rFkk oksYVehVj esa varj Li"V dhft,A 2
Differentiate between potentiometer anal voltmeter.

Page 27 of 30

15- fdl fn'kk esa pqEcdh; {ks= esa xfreku vkosf'kr d.k ij cy ¼i½ vf/kdre] ¼ii½ U;wure
gksx \ 2
Under which conditions the force acting on moving charged particle in magnetic field will be (i)
maximum (ii) minimum?

16- ,d vk;rkdkj ywi ftldh eki 0-04eh × 0-05 eh gS] ,d 0-8 oscj@eh2 ds leku

Å/okZ/kj {ks= esa fLFkr gSA ywi ls xqtjus okyk pqEcdh; ¶yDl Kkr dhft, tcfd ¼i½
ywi dk ry {kSfrt gS] ¼ii½ ywi dk ry Å/okZ/kj gSA 2
A rectangular loop of 0.04m x 0.05m measurement is situated in uniform vertical field of 0.8 weber/m².
Find the electrical flux passing through the loop when (i) plane of loop is horizontal (ii) plane of loop is
vertical.

17- 220 oksYV ek/; ewy eku rFkk vko`fr 50Hz dh izR;korhZ oksYVrk ds rkRdkfyd eku ds
fy, lehdj.k fyf[k,A
Write the equation of instantaneous value of alternating voltage of having root mean square value 220
volt and Frequency 50 Hz.

18- nks irys mÙky ysal ftudh {kerk 5 D rFkk 2D gS] ,d nwljs ls 20 lseh dh nwjh ij
lek{kh; :i ls j[ks x;s gSaA ysUl ;qXe dh Qksdl nwjh rFkk {kerk fudkfy,A 2
Two thin convex lenses of power 5D and 2D are kept Co-axially at a distance of 20 cm. from
each Other. Find the focal length and power of Combination of lenses.

19- ,d Vªk¡lQkeZj ds mtkZ {k; dks ukekafdr djsaA 2
Name the energy losses in a transformer.

20- fdlh [kxksyh; nwjn'khZ }kjk izfrfcEc cuus dk ukekafdr fdj.k vkjs[k cukb,A
Draw the labelled ray-diagram of image formation by any astronomical telescope.

Page 28 of 30

nh?kZ mÙkjh; iz'u @ Long Answer Type Questions

iz'u la[;k 21 ls 26 rd ds nh?kZ mÙkjh; gSA buesa ls fdlh rhu iz'u dk mÙkj nsaA izR;sd
iz'u ds fy, 5 vad fu/kkZfjr gaSA 3 x 5 = 15
Question Nos 21 to 26 are Long Answer Type. Answer any three question. Each question carries 5
marks. 3 x 5 = 15

21- fn[kk¡, fd pkyd }kjk vkosf'kr /kkjdkssa dks tksM+us ij mtkZ dk âkl gksrk gSA ;g ?kVh
mtkZ dgk¡ tkrh gSA 4$1¾5
Show that there will be loss of energy in case of joining two charged capacitors by a conducting
wire. What happen to this energy?

22- ch;ks&lkoZr fu;e fy[ksa vkSj bldk mi;ksx djds ,d /kkjkokgh o`Ùkkdkj dqaMyh dks v{k
ds fdlh fcUnq ij pqacdh; {ks= dk O;atd izkIr djsaA 1$4¾5
Write down Biot-Savart Law and applying it, find the expressing of magnetic field at a point on
the axis of a circular coil carrying electric current.

23- L-C-R izR;korhZ /kkjk Js.kh ifjiFk esa vuqukn ds fy, 'krZ fudkysaA vuqukn vko`fr ds fy,
O;atd izkIr djsaA 3$2¾5
Derive the Condition for resonance in the L-C-R Series alternating current circuit. Find the
expression for resonant frequency.

24- izdk'k dk O;frdj.k D;k gS \ ;ax ds f}d js[kk fNnz iz;ksx esa fÝat dh pkSM+kbZ dk O;atd
izkIr dhft,A 1$4¾5

What is interference of light? Find an expression for fringe width in Young's double slit
expression.

Page 29 of 30

25- P-N taD'ku Mk;ksM dh fØ;k le>k,¡A iw.kZ rjax fn"Vdkjh dk ifjiFk [khaps ,oa bldh
fØ;k le>k,¡A 2$3¾5
Explain the working of P-N junction diode. Draw the circuit of full wave rectifier and explain
its working.

26- irys ysal ds fy, lw=  = ( − 1)(భ − మ ) izkIr djsa] tgk¡ ladsrksa ds vFkZ lekU; gSaA5
  
For a thin lens find the formula = ( − 1)( − ) , Where the meaning of symbols is
 భ మ

general.

Page 30 of 30