Bihar Board Class 12 Model Question Paper 2022 Physics

INTEMEDIATE EXAMINATION – 2022
(ANNUAL)
Sub Code - 117
Model Set
Physics (ELECTIVE)
HkkSfrd 'kkL= ¼,sfPNd½
I.Sc. (TH)

Total no. of Questions : 70+20+6 = 96 Total no. of Printed Pages:

Time : 3 Hours 15 Minutes Full Marks : 70

Instructions to the Candidates :

1- ijh{kkFkhZ 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 answers in their own words as far
as practicable.

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

4- iz’uksa dks /;kuiwoZd i<+us ds fy, ijh{kkfFkZ;ksa dks 15 feuV dk vfrfjDr le;
fn;k x;k gSA

1

15 minutes extra time have been allotted for the candidates for
reading the questions carefully.

5- ;g iz’u iqfLrdk nks [k.Mksa esa gS & ,oa A
This question booklet is divided into two sections – Section-A and
Secrion-B.
6- [k.M&v esa 70 oLrqfu"B iz’u gSa] ftuesa ls fdUgha 35 iz’uksa dk mÙkj nsuk
vfuok;Z gSA 35 iz’uksa ls vf/kd dk mÙkj nsus ij izFke 35 dk gh ewY;kadu
gksxkA izR;sd ds fy, 1 vad fu/kkZfjr gSA budk mÙkj nsus ds fy, miyC/k
djk, x;s OMR mÙkj i=d esa fn, x, lgh fodYi dks uhys@dkys ckWy isu
ls izxk<+ djsaA fdlh Hkh izdkj ds âkbVuj @ rjy inkFkZ @ CysM @ uk[kwu
vkfn dk OMR mÙkj i=d esa iz;ksx djuk euk gS] vU;Fkk ifj.kke vekU;
gksxkA
In Section-A, there are 70 objective type questions, out of which
any 35 questions are to be answered. If more than 35 questions
are answered, then only first 35 will be evaluated. Each question
carries 1 mark. Darken the circle with blue / black ball pen against
the correct option on OMR Answer Sheet provided to you. Do not
use Whitener / liquid / blade / nail etc. on OMR Answer sheet,
otherwise the result will be invalid.

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

2

In Section-B, there are 20 short answer type questions each
carrying 2 marks, out of which any 10 questions are to be
answered. Apart from this, there are 6 long answer type questions,
each carrying 5 marks; out of which any 3 questions are to be
answered.

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

3

[k.M & v @ Section - A
oLrqfu"B iz’u @ Objective Type Qestions

iz’u la[;k 1 ls 70 rd ds izR;sd iz’u ds lkFk pkj fodYi fn, x, gSa] ftuesa ls ,d
lgh gSA vius }kjk pqus x, lgh fodYi dks OMR 'khV ij fpfUgr djsaA fdUgha 35 iz’uksa
ds mÙkj nsaA 35 x 1 = 35
Question no.s 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- i`"Bh; vkos’k ?kuRo dk S.I. ek=d gksrk gS A

(A) dwykWe x ehVj (B) dwykWe x ¼ehVj½2
1 1
(C) dwykWe x ehVj (D) dwykWe x ( )2
ehVj
S. I. unit of surface density of charge is -

(A) Coulomb x metre (B) Coulomb x (metre)2

(C) Coulomb x (D) Coulomb x (( )
)2

2- 0 dk eku gksrk gS &

(A) 8.85 x 10-12 F/m (B) 8.85 x 10-13 F/m

(C) 8.85 x 10-16 F/m (D) 8.85 x 10-20 F/m

The value of 0 is -

(A) 8.85 x 10-12 F/m (B) 8.85 x 10-13 F/m

(C) 8.85 x 10-16 F/m (D) 8.85 x 10-20 F/m

4

3- vkos'k 𝑞 ls ‘r’ nwjh ij fo|qrh; rhozrk ds eku ds fy, fuEufyf[kr esa dkSu lgh

gS&

(A) E = . (B) E = .
∈ ∈

(C) E = . (D) E = .
∈ ∈

Which of the following is correct for electric intensity at a distance

‘r’ from charge q ?

(A) E = . (B) E = .
∈ ∈

(C) E = . (D) E = .
∈ ∈

4- fdlh xksyh; i`"B ds vUnj ;fn +q vkos’k j[k fn;k tk;s rks laiw.kZ i`"B ls

fudyus okyk fo|qr&¶yDl ds fy, fuEufyf[kr esa dkSu lgh gS \

(A) q x 0 (B)
∈

∈
(C) (D)
∈

Which of the following is correct for total electric flux from the

whole surface, if +q charge is placed inside any spherical surface?

(A) q x 0 (B)
∈

∈
(C) (D)
∈

5- oS|qr f}/kzqo dh fuj{kh; fLFkfr esa fo|qr~ foHko dk O;atd gksrk gS &

5

(A) . (B) .
∈ ∈

(C) . sa (D) 'kwU;
∈

The electric potential in equatorial position of an electric dipole is -

(A) . (B) .
∈ ∈

(C) . (D) Zero
∈

6- vkosf’kr la/kkfjr ij laxzkgd ifV~Vdk vkSj la?kud ifV~Vdk ds vkos’kksa dk ;ksx

gksrk gS &

(A) 'kwU; (B) 1𝜇C

(C) 1C (D) vuar

Sum of charges on collecting plate and condensing plate of a

charged capacitor is -

(A) Zero (B) 1𝜇C

(C) 1C (D) Infinite

7- vkos’k dk foek gksrk gS &

(A) AT (B) AT-1

(C) A-1T (D) AT2

Dimension of charge is -

(A) AT (B) AT-1

(C) A-1T (D) AT2

6

oksYV
8- fuEufyf[kr esa fdl jkf’k dk ek=d ehVj gksrk gS \

(A) fo|qrh; ¶yDl (B) fo|qrh; foHko

(C) fo|qrh; /kkfjrk (D) fo|qrh; {ks=

Which of the following quantity has unit ?

(A) Electric flux (B) Electric potential

(C) Electric capacity (D) Electric field

9- vkisf{kd ijkoS|qrrk dk ek=d gS &

(A) Nm/C2 (B) Nm2/C2

(C) N2m/C2 (D) buesa ls dksbZ ugha

The unit of relative permittivity is

(A) Nm/C2 (B) Nm2/C2

(C) N2m/C2 (D) None of these

10- nks leku /kkfjrk ‘C’ okys la?kkfj= dks lekukUrj Øe esa tksM+us ij mldh

lerqY; /kkfjrk gksrh gS &

(A) 2C (B) C

(C) (D)

Two capacitors each of capacity ‘C’ are connected in parallel. The

equivalent capacity is

(A) 2C (B) C

7

(C) (D)

11- ′𝜇′ viorZukad rFkk ‘A’ fizTe dks.k okys irys fizTe dk U;wure fopyu dks.k

gksrk gS&

(A) (1- 𝜇)A (B) (𝜇 – 1)A

(C) (𝜇 + 1)A (D) (𝜇 + 1)A2

Minimum deviation angle of a thin prism of refractive index ′𝜇′ and

angle of prism A is -

(A) (1- 𝜇)A (B) (𝜇 – 1)A

(C) (𝜇 + 1)A (D) (𝜇 + 1)A2

12- lw;Z ds izdk’k dk o.kZØe gksrk gS &

(A) lrr~ (B) jSf[kd o.kZØe

(C) dkyh js[kk dk o.kZØe (D) dkyh iV~Vh dk o.kZØe

The solar spectrum is -

(A) Continuous (B) Line spectrum

(C) Spectrum of black lines (D) Spectrum of black bands

13- lkekU; lek;kstu ds fy, [kxksyh; nwjn’kZd dh vko)Zu {kerk gksrh gS &

(A) - (B) – fo x fe

(C) - (D) – fo + fe

8

The magnifying power of an astronomical telescope for normal

adjustment is -

(A) - (B) – fo x fe

(C) - (D) – fo + fe

14- fuEufyf[kr esa fdl dk viorZukad lcls vf/kd gksrk gS \

(A) dk¡p (B) ikuh

(C) yksgk (D) ghjk

Which of the following has maximum refractive index ?

(A) glass (B) water

(C) iron (D) diamond

15- fÝat dh pkSM+kbZ ds fy, fuEufyf[kr esa dkSu lw= lgh gS \

 
(A) 𝛽 = (B) 𝛽 =

(C) 𝛽 = 𝐷..𝑑 (D) 𝛽 = 2𝐷 .𝑑

Which of the following formula is correct for fringe width ?

 
(A) 𝛽 = (B) 𝛽 =

(C) 𝛽 = 𝐷..𝑑 (D) 𝛽 = 2𝐷..𝑑

16- ,d izdk’k&o"kZ cjkcj gksrk gS

(A) 9.46 x 1015 m (B) 9.46 x 10-15 m

9

(C) 9.46 x 1014 m (D) 9.46 x 10-14 m

One light-year is equal to -

(A) 9.46 x 1015 m (B) 9.46 x 10-15 m

(C) 9.46 x 1014 m (D) 9.46 x 10-14 m

17- fuEufy[kr esa dkSu ysal&esdj lw= lgh gS \

(A) =( - 1) ( - ) (B) = (1 - )( - )

(C) = ( - 1) (R2 – R1) (D) = ( - 1) (R1 + R2)

Which of the following is correct lens-maker formula ?

(A) =( - 1) ( - ) (B) = (1 - )( - )

(C) = ( - 1) (R2 – R1) (D) = ( - 1) (R1 + R2)

18- fuEufyf[kr esa dkSu ikuh ds viorZukad ds fy, lgh gS \

(A) 𝜇 = 1 (B) 𝜇 = 2

(C) 𝜇 = 1.5 (D) 𝜇 = 1.33

Which of the following is correct for refractive index of water ?

(A) 𝜇 = 1 (B) 𝜇 = 2

(C) 𝜇 = 1.5 (D) 𝜇 = 1.33

19- lkekU; vk¡[k ds fy, Li"V n`f"V dh U;wure nwjh gS &

(A) 100 cm (B) 50 cm

(C) 250 cm (D) 25 cm

10

Least distance of distinct vision for normal eye is -

(A) 100 cm (B) 50 cm

(C) 250 cm (D) 25 cm

20- fuEufyf[kr esa dkSu dq’kh dk lehdj.k gS \

(A) 𝜇 = + (B) 𝜇 = +
   

(C) 𝜇 = A + (D) 𝜇 = A -
 

Which of the following is cauchy’s equation ?

(A) 𝜇 = + (B) 𝜇 = +
   

(C) 𝜇 = A + (D) 𝜇 = A -
 

21- fuEufyf[kr esa dkSu izdhf.kZr izdk’k dh rhozrk ¼ I ½ vkSj izdk’k ds rjaxnS/;Z

¼½ ds fy, lgh gS \

(A) I 𝛼 2 (B) I 𝛼


(C) I 𝛼 4 (D) I 𝛼


Which of the following is correct for intensity of scattered light (I)

and wave-length of light () ?

(A) I 𝛼 2 (B) I 𝛼


(C) I 𝛼 4 (D) I 𝛼


22- fuEufyf[kr esa dkSu izdk’k ds fy, ek/;e ds cnyus ls ugha cnyrk gS \

11

(A) vko`fÙk (B) viorZukad

(C) osx (D) rjaxnS/;Z

Which of the following does not change with the change of

medium for light ?

(A) frequency (B) refractive index

(C) velocity (D) wave-length

23- fuEufyf[kr esa dkSu lacU/k lgh gS \

(A) dykarj ¾ x iFkkarj (B) iFkkarj ¾ x dykarj
 

(C) iFkkarj ¾ 2𝜋 x dykarj (D) dykarj ¾ 2𝜋 x iFkkarj

Which of the following relation is correct ?

(A) Phase – difference = x path-difference


(B) Path-difference = x Phase-difference


(C) Path-difference = 2𝜋 x Phase-difference

(D) Phase-difference = 2𝜋 x Path-difference

24- fuEufyf[kr esa dkSu fouk’kh O;frdj.k ds fy, lgh gS \

(A) dykarj ¾ 2n𝜋 (B) dykarj ¾ (2n + 1) 𝜋

(C) dykarj ¾ 2 𝜋 (D) dykarj ¾ 3n 𝜋

Which of the following is correct for destructive interference ?

(A) Phase-difference = 2n𝜋

12

(B) Phase-difference = (2n + 1) 𝜋

(C) Phase-difference = 2 𝜋

(D) Phase-difference = 3n 𝜋

25- fuEufyf[kr esa dkSu izdk’k ds jax ds fy, eq[; dkj.k gS \

(A) rjaxnS/;Z (B) osx

(C) dyk (D) vk;ke

Which of the following is the main cause for colour of light ?

(A) Wave-length (B) Velocity

(C) Phase (D) Amplitude

26- fuEufyf[kr esa dkSu vkos’kjfgr gS \

(A) 𝛼&d.k (B) 𝛽&d.k

(C) QksVkWu d.k (D) izksVkWu

Which of the following is chargeless ?

(A) 𝛼 - particle (B) 𝛽 - particle

(C) Photon-particle (D) Proton

27- fuEufyf[kr esa fdls bysDVªkWu oksYV esa ekik tkrk gS \

(A) vkos’k (B) foHkokUrj

(C) /kkjk (D) ÅtkZ

Which of the following is measured in electron volt ?

(A) Charge (B) Potential difference
13

(C) Current (D) Energy

28- fuEufyf[kr esa dkSu QksVkWu dh ÅtkZ ds fy, lgh gS \

(A) ℎ𝑐 (B)


 
(C) (D)

Which of the following is correct for energy of Photon ?

(A) ℎ𝑐 (B)


 
(C) (D)

29- rjax&la[;k cjkcj gksrk gS &

(A) (B) 


(C) (D)
 

Wave-number is equal to

(A) (B) 


(C) (D)
 

30- fuEufyf[kr esa dkSu lEcU/k ukfHkd dh f=T;k ds fy, lgh gS \

(A) R = R0𝐴 (B) R = R0𝐴

(C) R = R0A2 (D) R = R0A3

Which of the following is correct for radius of nucleus ?

(A) R = R0𝐴 (B) R = R0𝐴

14

(C) R = R0A2 (D) R = R0A3

31- fuEufyf[kr esa dkSu lEcU/k lgh gS \

(A) 1 = 1.6605 x 10-24 kg (B) 1 = 1.6605 x 10-25 kg

(C) 1 = 1.6605 x 10-26 kg (D) 1 = 1.6605 x 10-27 kg

Which of the following relation is correct ?

(A) 1 = 1.6605 x 10-24 kg (B) 1 = 1.6605 x 10-25 kg

(C) 1 = 1.6605 x 10-26 kg (D) 1 = 1.6605 x 10-27 kg

32- fuEufyf[kr esa dkSu vkSlr vk;q ds fy, lgh gS \

(A) T0 =  (B) T0 = 2

(C) T0 = (D) T0 =
 

Which of the following is correct for average life ?

(A) T0 =  (B) T0 = 2

(C) T0 = (D) T0 =
 

33- esa U;wVªkWu dh la[;k gksxh &

(A) 92 (B) 238

(C) 146 (D) 330

Number of neutrons in will be -

(A) 92 (B) 238

(C) 146 (D) 330

15

34- fuEufyf[kr esa dkSu lgh gS \

(A) (4)10 = (100)2 (B) (4)10 = (10)2

(C) (4)10 = (1001)2 (D) (4)10 = (111)2

Which of the following is correct ?

(A) (4)10 = (100)2 (B) (4)10 = (10)2

(C) (4)10 = (1001)2 (D) (4)10 = (111)2

35- f}vk/kkjh ;ksx ¼1 $ 1½ ds cjkcj gksrk gS &

(A) 1 (B) 0

(C) 10 (D) 11

Binary addition (1 + 1) is equal to -

(A) 1 (B) 0

(C) 10 (D) 11

36- OR xsV ds fy, cwfy;u O;atd gksrk gS &

(A) 𝐴̅ = A (B) C = 𝐴𝐵

(C) A.B = 0 (D) A + B = C

Boolean expression for OR gate is

(A) 𝐴̅ = A (B) C = 𝐴𝐵

(C) A.B = 0 (D) A + B = C

37- pqacdh; vk?kw.kZ dk ek=d gksrk gS &
-2
(A) JT-1 (B) JT
16

(C) JT (D) J-1T

Unit of magnetic moment is -
-2
(A) JT-1 (B) JT

(C) JT (D) J-1T

38- pqacd’khyrk gksrk gS &

(A) 𝜇 = (B) 𝜇 =

(C) 𝜇 = 𝐵𝐻 (D) 𝜇 =

Permeability is -

(A) 𝜇 = (B) 𝜇 =

(C) 𝜇 = 𝐵𝐻 (D) 𝜇 =

39- fuEufyf[kr esa ueu&dks.k ¼𝛿½ ds fy, dkSu lgh gS \

(A) tan𝛿 = (B) tan𝛿 =

(C) tan𝛿 = 𝐵 .𝐵 (D) tan𝛿 = (𝐵 .𝐵 )2

Which of the following is correct for angle of dip (𝛿 ) ?

(A) tan𝛿 = (B) tan𝛿 =

(C) tan𝛿 = 𝐵 . 𝐵 (D) tan𝛿 = (𝐵 .𝐵 )2

40- i`Foh ds pqEcdh; /kzqo ij ueu dks.k dk eku gksrk gS &

17

(A) 00 (B) 450

(C) 900 (D) 1800

The value of angle of dip at the earth’s magnetic pole is -

(A) 00 (B) 450

(C) 900 (D) 1800

41- pqEcd dh T;kferh; yEckbZ ¼ Lg½ rFkk pqEcdh; yEckbZ ¼ Lm½ esa lEcU/k gksrk gS

&

(A) Lm = Lg (B) Lm = Lg

(C) Lm = Lg (D) Lm = 2Lg

The relation between geometrical length (Lg) of a magnet and its

magnetic length (Lm) is -

(A) Lm = Lg (B) Lm = Lg

(C) Lm = Lg (D) Lm = 2Lg

42- fuokZr dh pqacd’khyrk ¼ 𝜇0½ gksrh gS &

(A) 𝜇0 = 4𝜋 x 10-7 Hm-1 (B) 𝜇0 = 4𝜋 Hm-1

(C) 𝜇0 = 10-7 Hm-1 (D) 𝜇0 = 𝜋 x 10-7 Hm-1

Permeability of free space (𝜇0) is -

(A) 𝜇0 = 4𝜋 x 10-7 Hm-1 (B) 𝜇0 = 4𝜋 Hm-1

(C) 𝜇0 = 10-7 Hm-1 (D) 𝜇0 = 𝜋 x 10-7 Hm-1

18

43- fuokZr esa pqacdh; izo`fÙk gksrh gS &

(A) 0 (B) 1

(C)  ¼vuUr½ (D) 100

Magnetic Susceptibility in Vacuum is -

(A) 0 (B) 1

(C)  (infinity) (D) 100

44- fuokZr esa fo|qr&pqacdh; rjax dk pky gksrk gS

∈
(A) C = (B) C =
∈

(C) C = (D) C =
∈

The speed of electromagnetic wave in vacuum is -

∈
(A) C = (B) C =
∈

(C) C = (D) C =
∈

45- ,Dl fdj.kksa ds rjaxnS/;Z dk eku gksrk gS &

(A) yxHkx 10&7 ehVj (B) yxHkx 107 ehVj

(C) yxHkx 107 eheh (D) 1 lseh

The value of Wave-length of X-rays is -

(A) about 10-7 m (B) about 107 m

(C) about 107 mm (D) 1 cm

19

46- fo|qr pqacdh; rjax ds lajpj.k dh fn’kk gksrh gS &

(A) 𝐸⃗ ds lekarj (B) 𝐵⃗ds lekarj

(C) 𝐵⃗ x 𝐸⃗ ds lekarj (D) 𝐸⃗ 𝑥 𝐵⃗ ds lekarj

The direction of propagation of electromagnetic wave is -

(A) Parallel to 𝐸⃗ (B) Parallel to 𝐵⃗

(C) Parallel to 𝐵⃗ x 𝐸⃗ (D) Parallel to 𝐸⃗ 𝑥 𝐵⃗

47- fdlh bysDVªkWu ds vkos’k dk eku gksrk gS &

(A) 1.6 x 10-21 C (B) 1.6 x 10-19 C

(C) 1.6 x 10-9 C (D) 1.6 x 10-11 C

The value of charge of an electron is -

(A) 1.6 x 10-21 C (B) 1.6 x 10-19 C

(C) 1.6 x 10-9 C (D) 1.6 x 10-11 C

48- Iykad fu;rkad ¼ Planck Constant ½ dh foek gksrh gS

(A) ML2T-1 (B) ML2T2

(C) MLT-1 (D) MLT-2

Dimension of Planck Constant is

(A) ML2T-1 (B) ML2T2

(C) MLT-1 (D) MLT-2

49- fuEufyf[k esa dkSu lgh gS \

20

(A) 1 ev = 1.6 x 10-19 J (B) 1 ev = 10-19 J

(C) 1 ev = 1.6 x 1019 J (D) 1 ev = 1019 J

Which of the following is correct ?

(A) 1 ev = 1.6 x 10-19 J (B) 1 ev = 10-19 J

(C) 1 ev = 1.6 x 1019 J (D) 1 ev = 1019 J

50- jsfM;ks /kehZ {k; ds fy;s O;atd gS &

(A) N = NO 𝑒  (B) N = NO 𝑒 

(C) N = NO 𝑒  (D) N = NO 𝑒 

The expression for radio active decay is -

(A) N = NO 𝑒  (B) N = NO 𝑒 

(C) N = NO 𝑒  (D) N = NO 𝑒 

51- fuEufyf[kr esa 𝛼&d.k ds fy, dkSu lgh gS \

(A) 1 izksVkWu vkSj 1 U;wVªkWu (B) 2 izksVkWu vkSj 2 U;wVªkWu

(C) 1 izksVkWu vkSj 3 U;wVªkWu (D) 2 izksVkWu vkSj 3 U;wVªkWu

Which of the following is correct for 𝛼 –particle ?

(A) 1 Protons and 1 neutron (B) 2 Protons and 2 neutron

(C) 1 Protons and 3 neutron (D) 2 Protons and 3 neutron

52- laHko d{kkvksa esa bysDVªkWu dk dks.kh; laosx gksrk gS &

(A) L = (B) L =

21

(C) L = (D) L =

Angular momentum of electron in possible orbit is -

(A) L = (B) L =

(C) L = (D) L =

53- dSFkksM fdj.ksa lewg gS &

(A) bysDVªkWuksa ds (B) izksVkWuks ds

(C) U;wVªkWuksa ds (D) ijek.kqvksa ds

Cathode rays are collection of

(A) elctrons (B) Protons

(C) neutrons (D) atoms

54- ijek.kq esa vofLFkr ewy d.k gS &

(A) izksVksu ,oa bysDVªkWu (B) bysDVªkWu ,oa U;wVªkWu

(C) izksVksu ,oa U;wVªkWu (D) bysDVªkWu ,oa U;wfDy;al

The fundament particles present in an atom is -

(A) Protons and electrons (B) Electrons and neutrons

(C) Protons and neutrons (D) Electrons and nucleons

55- fuEufyf[kr esa dkSu fddZgkWd ds izFke fu;e esa lajf{kr gksrk gS \

(A) ÅtkZ (B) vkos’k

(C) laosx (D) nzO;eku

22

Which of the following is conserved in Kirchhoff’s 1st law ?

(A) energy (B) charge

(C) momentum (D) mass

56- R f=T;k okys o`Ùkkdkj dqaMyh ds dsUnz ij I /kkjk cgus ds dkj.k pqEcdh; cy

{ks= gksrk gS &

(A) (B)

(C) (D)

Magnetic Induction at the centre of circular coil of radius r carrying

current I is-

(A) (B)

(C) (D)

57- fuEufyf[kr esa dkSu lgh gS \

(A) 1 kwh = 3.6 x 106 J (B) 1 kwh = 3.6 J

(C) 1 kwh = 106 J (D) 1 kwh = 3 x 106 J

Which of the following is current ?

(A) 1 kwh = 3.6 x 106 J (B) 1 kwh = 3.6 J

(C) 1 kwh = 106 J (D) 1 kwh = 3 x 106 J

58- fuEufyf[kr esa dkSu lgh gS \

(A) 1 Vslyk ¾ 1 NA-1m-1 (B) 1 Vslyk ¾ 1 A-1m-1

23

(C) 1 Vslyk ¾ 1 NA-1 (D) 1 Vslyk ¾ 1 Nm-1

Which of the following is correct ?

(A) 1 tesla = 1 NA-1m-1 (B) 1 tesla = 1 A-1m-1

(C) 1 tesla = 1 NA-1 (D) 1 tesla = 1 Nm-1

59- vkn’kZ oksYVehVj dk izfrjks/k gksrk gS &

(A) 10 vkse (B) 20 vkse

(C) 100 vkse (D) vuUr

Resistance of an ideal voltmeter is -

(A) 10 ohm (B) 20 ohm

(C) 100 ohm (D) infinity

60- ,sehVj dh /kkjk&lqxzkfgrk gksrk gS &
fo{ksi /kkjk
(A) /kkjk (B)
fo{ksi
(C) fo{ksi X /kkjk (D) fo{ksi X foHkokUrj

Current sensitivity of Ammeter is -

(A)

(B)

(C) 𝑑𝑒𝑓𝑙𝑒𝑐𝑡𝑖𝑜𝑛 x 𝑐𝑢𝑟𝑟𝑒𝑛𝑡

(D) 𝑑𝑒𝑓𝑙𝑒𝑐𝑡𝑖𝑜𝑛 𝑥 𝑝𝑜𝑡𝑒𝑛𝑡𝑖𝑎𝑙 𝑑𝑖𝑓𝑓𝑒𝑟𝑒𝑛𝑐𝑒

61- LoizsjdRo dk S.I. ek=d gS &

24

(A) dwykWe (B) oksYV

(C) vkse (D) gsujh

S.I. unit of self-inductance is

(A) Coulomb (B) volt

(C) ohm (D) henry

62- fuEufyf[kr esa izR;korhZ /kkjk ds fy, dkSu lgh gS \

(A) Irms = 0.707I0 (B) Irms = 0.606I0

(C) Irms = 0.637I0 (D) Irms = 0.505I0

Which of the following is correct for alternating current ?

(A) Irms = 0.707I0 (B) Irms = 0.606I0

(C) Irms = 0.637I0 (D) Irms = 0.505I0

63- fuEufyf[kr esa izsjf.kd&izfr?kkr ds fy, dkSu lgh gS \

(A) XL = 𝜔L (B) XL = 𝜔2L

(C) XL = 𝜔L2 (D) XL =

Which of the following is correct for inductive reactance ?

(A) XL = 𝜔L (B) XL = 𝜔2L

(C) XL = 𝜔L2 (D) XL =

64- fuEufyf[kr esa izR;koÙkhZ /kkjk ifjiFk esa dsoy la/kkfj= C jgus ij /kkfjrh;

izfr?kkr gksrk gS &

25

(A) XC = (B) XC = 𝜔C

(C) XC = (D) XC = Zero

The capacitive reactance Xc alternating current circuit containing

only capacitances C.

(A) XC = (B) XC = 𝜔C

(C) XC = (D) XC = Zero

65- (L – R) ifjiFk dk izfrck/kk gksrk gS &

A. Z = 𝜔R (B) Z = √𝑅 + 𝜔𝐿

(C) Z = 𝑅 + (𝜔𝐿) (D) Z = R + 𝜔L

Impedance of (L – R) circuit is -

B. Z = 𝜔R (B) Z = √𝑅 + 𝜔𝐿

(C) Z = 𝑅 + (𝜔𝐿) (D) Z = R + 𝜔L

66- izR;korhZ ifjiFk esa 220V dk f’k[kj eku gksrk gS &

(A) 220V (B) 220√2V

(C) 300 V (D) 200 V

Peak value of 220V in alternating circuit is -

(A) 220V (B) 220√2V

(C) 300 V (D) 200 V

67- /kkjkokgh izsfj= esa pqEcdh; ÅtkZ gksrk gS &
26

(A) L.I (B) L2I

(C) LI2 (D) LI2

Magnetic energy in a current carrying inductor is -

(A) L.I (B) L2I

(C) LI2 (D) LI2

68- pqacdh; {ks= esa /kkjkokgh pkyd ij dk;Zdkjh cy gksrk gs &

(⃗ )⃗
(A) 𝐹⃗ = (B) 𝐹⃗ = I(𝑙⃗ x 𝐵⃗)

(⃗ )⃗
(C) 𝐹⃗ = (D) 𝐹⃗ = I(𝐵⃗ x 𝑙⃗)

Force on a current carrying conductor in a magnetic field is -

(⃗ )⃗
(A) 𝐹⃗ = (B) 𝐹⃗ = I(𝑙⃗ x 𝐵⃗)

(⃗ )⃗
(C) 𝐹⃗ = (D) 𝐹⃗ = I(𝐵⃗ x 𝑙⃗)

69- fuEufyf[kr esa dkSu O;atd fo|qr&’kfDr ds fy, lgh gS \

(A) P = V2R (B) P = VR2

(C) P = (D) P =

Which of the following is correct for the expression of electric

power ?

(A) P = V2R (B) P = VR2

27

(C) P = (D) P =

70- ekuo us= dh foHksnu {kerk ¼feuV esa½ gksrh gS

(A) (B) 1

(C) 10 (D)

The resolving power of human eye (in minute) is

(A) (B) 1

(C) 10 (D)

[k.M&c @ Section-B

y?kq mÙkjh; iz’u @ Short Answer Type Questions.

iz'u la[;k 1 ls 20 y?kq mÙkjh; iz’u gSaA fdUgha 10 iz’uksa ds mÙkj nsaA izR;sd ds fy, 2

vad fu/kkZfjr gSA 2x10=20

Question Nos 1 to 20 are short Answer Type. Answer any 10 questions.

Each question carries 2 marks. 2x10=20

1- ykWjsaV~Tk cy ls vki D;k le>rs gSa \ 2

What do you mean by Lorentz force ?

2- fo|qr&f)/kzqo dh ifjHkk"kk fy[ksa & 2

Write the definition of electric dipole.

3- S.I. Ekk=d ds lkFk la?kkfj= dh /kkfjrk dks le>k;sa & 1$1¾2

28

Explain the capacity of a capacitor with S.I. unit.

4- izfrjks/kdrk ls vki D;k le>rs gSa \ 2

What do you mean by resistivity.

5- S.I. Ekk=d ds lkFk fo|qr&ckgd cy dks le>k;saA 1$1¾2

Explain electromotive force with S.I. unit.

6- dkcZu izfrjks/k dk dyj dksM ls vki D;k le>rs gSa \ 2

What do you mean by colour code of carbon resistance.

7- vU;ksU; izsj.k ls vki D;k le>rs gSa \ 2

What do you mean by mutual induction ?

8- pksd&dqaMyh dks le>k;sa & 2

Explain choke-coil.

9- pqacd ds {ks= esa nks ekud fLFkfr;k¡ dks fy[ksa & 1$1¾2

Write two standard positions in magnetic field of a magnet.

10- i`Foh ds pqacdh; rRo dks le>k;saA 2

Explain magnetic elements of the earth.

11- viorZukad ls vki D;k le>rs gSa \ 2

What do you mean by refractive index ?

12- laifdZr ysalksa dh {kerk dks le>k;saA 2

Explain power of lenses in contact.

13- fudV n`f"V ds dkj.kksa dks fy[ksaA 1$1¾2
29

Write the causes of short-sightedness.

14- banz/kuq"k ls vki D;k le>rs gSaA 2

What do you mean by Rainbow ?

15- rjaxkxz dks le>k;sa & 2

Explain wave fronts.

16- ukHkdh; ca/ku&ÅtkZ dks le>k;saA 2

Explain Nuclear binding energy.

17- AND xsV dks le>k;sa A 2

Explain AND-gate.

18- izfrpqacdh; inkFkZ ds nks mnkgj.k fy[ksaA 1$1¾2

Write two examples of diamagnetic substance.

19- ueu dks.k dh ifjHkk"kk fy[ksaA 2

Write the definition of angle of dip.

20- v)Zpkyd dks le>k;saA 2

Explain Semi conductor.

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

iz'u la[;k 21 ls 26 nh?kZ mÙkjh; iz’u gSaA fdUgha 3 iz’uksa ds mÙkj nsaA izR;sd ds fy, 5

vad fu/kkZfjr gSA 3x5=15

30

Question Nos 21 to 26 are short Answer Type. Answer any 3 questions.

Each question carries 5 marks. 3x5=15

21- fdjpkWQ ds fu;eksa dks fy[ksa rFkk le>k;saA bu fu;eska dk mi;ksx dj

âkhVLVksu fczt ds larqyu dh voLFkk izkIr djsaA 2$3¾5

State and explain Kirchoff’s laws. Applying this law, obtain

balanced condition of Wheatstone’s bridge.

22- fo|qrh; f}/kzqo ds dkj.k fdlh fcUnq ij fo|qr&rhozrk dk O;atd izkIr djsaA 5

Find out an expression for electric Intensity at any point due to an

electric dipole.

23- vory lrg ds fy, fn, x, lw= dks LFkkfir djsa & 5

= -

Establish the given formula for a concave surface.

= -

24- rjax&fl)kUr ds vk/kkj ij izdk’k ds ijkorZu ds fu;eksa dks LFkkfir djsaA 5

Establish the laws of reflection of light on the basis of wave theory.

25- OR xsV vkSj NOR xsV dks le>k;saA 5

Explain OR gate and NOR gate.

26- fuj{kh; fLFkfr esa fdlh NM+&pqEcd ds dkj.k pqEcdh; {ks= ds fy, O;atd izkIr

djsaA 5

31

Find out the expression for magnetic field due to a bar magnet in

broad-side on position.

32