MP Board Class 12 Sample Paper 2023 Physics

vH;kl gsrq lasiy iz’u i=

Ekk/;fed f’k{kk e.My] e-iz- Hkksiky
gk;j lsd.Mjh ijh{kk 2022&2023
Higher Secondary Examination 2022-2023
HkkSfrd 'kkL=
PHYSICS
(Hindi & English Versions)
Total Questions- 19 Time- 3 Hours
Total Printed Pages-13 Maximum Marks-70

funsZ’k%
lHkh iz’u gy djuk vfuok;Z gSaA iz’u Øekad 05 ls 19 rd izR;sd esa vkarfjd
(i)
fodYi fn;s x;s gSaA
(ii) iz’u Øekad 01 ls 04 rd izR;sd iz’u ij 7 vad fu/kkZfjr gSA izR;sd miiz’u
ij 1 vad fu/kkZfjr gSA
(iii) iz’u Øekad 05 ls 12 rd izR;sd ds 2 vad fu/kkZfjr gSaA izR;sd mRrj ds fy,
'kCn lhek 30 'kCn gSA
(iv) iz’u Øekad 13 ls 16 rd izR;sd iz’u ds 3 vad fu/kkZfjr gSaA izR;sd mRrj ds
fy, 'kCn lhek 75 'kCn gSA
(v) iz’u Øekad 17 ds fy;s 4 vad fu/kkZfjr gSaA mRrj gsrq 'kCn lhek 120 'kCn gSA
(vi) iz’u Øekad 18 o 19 rd izR;sd iz’u ds 5 vad fu/kkZfjr gSaA izR;sd mRrj ds
fy, 'kCn lhek 150 'kCn gSA
Instructions%

(i) All Questions are compulsory. Internal choice is given in every
question from Question No. 05 to 19.
(ii) Question no. 01 to 04 carries 7 marks for each. Each sub question
carries 1 mark.
(iii) Question no. 05 to 12 carries 2 marks for each. For every answer
word limit is 30.
(iv) Question no. 13 to 16 carries 3 marks for each. For every answer
word limit is 75.
(v) Question no. 17 carry 4 mark. For answer word limit is 120.
(vi) Question no. 18 and 19 carries 5 marks for each. For every answer
Word limit is 150.
1

iz-1 izR;sd iz’u ds fn, x, fodYiksa esa ls lgh fodYi pqudj fyf[k,A 1x7=7 vad
Select and write the correct option from the options given in each question.

v-½ fcanq vkos’k Q ds dkj.k 𝑟 nwjh ij fo|qr {ks= dh rhozrk 𝐸:

1- 𝐸 ∝ 𝑟 2- 𝐸 ∝

3- 𝐸 ∝ 4- 𝐸 ∝
A.) The intensity of electric field (E) at a distance ‘r’ from the point Q is:

1- 𝐸 ∝ 𝑟 2- 𝐸 ∝

3- 𝐸 ∝ 4- 𝐸 ∝

c-½ /kkjk ds pqEcdh; izHkko dh [kkst dh Fkh&
1- ¶ysfeax us 2- vksLVsaM us
3- QSjkMs us 4- ,sfEi;j us
B.) Magnetic effect of electric current was discovered by:

1. Fleming 2. Oersted
3. Faraday 4. Ampere

l-½ pqacdh; ¶yDl ij SI ek=d gS&
1- oscj 2- xkml
3- vkWLVsaM 4- Vslyk
C.) The SI Unit of magnetic flux is

1. Weber 2. Gauss
3. Oersted 4. Tesla

n-½ fuokZr~ esa fo|qr pqEcdh; rjax dk osx gksrk gS&

1- 𝐶 = μ1∈o 2- 𝐶 = μ ∈
o

∈
3- C = 4- C =

2

D.) Velocity of electromagnetic waves in vacuum.
1
1. 𝐶 =
μo ∈o
2- 𝐶 = μ ∈

∈
3- C = 4- C =

b-½ T;kferh; Nk;k esa izdk’k ds vfrØe.k dks dgrs gS
1- O;fDrdj.k 2- foorZu
3- /kzqo.k 4- viorZu

E.) The overlapping of light in geometrical shadow is called

1. Interference 2. Diffraction
3. Polarization 4. Refraction

Q-½ ,d QksVksu dh ÅtkZ 3 ev gSA QksVkWu dk rjaxnS/;Z gksxk&
1- 4125 nm 2- 412-5 nm
3- 4150 nm 4- 4 nm
f.) A photon has energy 3 ev. Then wave length of photon is

1- 4125 nm 2- 412-5 nm
3- 4150 nm 4- 4 nm

>-½ ,d xzke inkFkZ ds lerqY; ÅtkZ gksxh&
1- 9X106 twy 2- 3X1013 twy
3- 3X106 twy 4- 9X1013 twy
g.) Energy equivalent to 1gm of mass is
1- 9X106 Joule 2- 3X1013 Joule
3- 3X106 Joule 4- 9X1013 Joule

3

iz-2 fjDr LFkkuksa dh iwfrZ dhft, 1x7=7 vad

¼v½ nks lekarj pkyd rkjksa esa ,d gh fn’kk esa /kkjk izokfgr gks jgh gS] os
,d&nwljs dks------------------------djsaxsA
¼c½ /kkjkokgh o`Rrkdj dqaMyh ds dsUnz ij pqEcdh; {ks= mlds ry ds---------gksrk gSA
¼l½ tc ,d bysDVªkWu pqEcdh; {ks= ds----------------------xfr djrk gS rc ml ij dksbZ cy
dk;Z ugha djrk gSA
¼n½ ;fn fdlh izR;korhZ /kkjk ifjiFk esa ÅtkZ O;; dh nj 'kwU; gks] rc ifjiFk dh
/kkjk dks---------/kkjk dgrs gSA
¼b½ VªkalQkWeZj----------------------ds fl)kar ij dk;Z djrk gSA
¼Q½ dqaMyh esa izsfjr /kkjk dh fn’kk -------------------ds fu;e ls Kkr dh tkrh gSA
¼>½ izdkf’kd rarq ------------------------ds fl)kar ij dk;Z djrk gSA

Q.2 Fill in the blanks: 1x7=7 vad

(a) When current flows through the two parallel wires is in same direction
then then will…………………each other.

(b) The magnetic field at the centre of a current carrying circular coil
is………… to its plane.

(c) When an electron moves……………………to a magnetic field then no
force acts on it.

(d) If the rate of loss of energy in an circuit is zero then the current through
circuit is called…………………..current.

(e) Transformer works on the principle of …………………

(f) The direction of induced current in the coil is given by……………..law.

(g) …………………….is the principle of working of optical fibre.

4

iz-3 lgh tksfM+;k cukb,A 1x7=7 vad

v c

1- fjMcxZ fu;rkad v- nevd

2- cksj f=T;k c- ℎ𝑣 = h𝑣 + mv

3- QksVkWu dk laosx l- −1 𝑅
∈
4- vkbUVhu dk izdk’k fo|qr lehdj.k n-
⊼

5- izfrjks/kdrk rki xq.kkad b-
∈

6- lsy dk vkarfjd izfrjks/kd Q- α =
×

7- /kkjk ?kuRo x- P=

Q.3 Match the columns: 1x7=7 vad

A B
1. Rydberg constant v- nevd

2. Bohr radius c- ℎ𝑣 = h𝑣 + mv

3. momentum of photon l- −1 𝑅

∈
4. Einstein photoelectric equation n-
⊼

5. Temperature coefficient of resistance b-
∈

6. Internal resistance of cell Q- α =
×

7. Current density x- P=
5

iz-4 ,d 'kCn ;k ,d okD; esa mRrj nhft,A 1x7=7 vad

1- Rkkio`f) ds lkFk v)Zpkyd dh pkydrk esa fdl izdkj ifjorZu gksrk gS \
2- P-N laf/k esa vo{k; irZ dh eksVkbZ fdl dksfV dh gksrh gS \
3- fdl vfHkufr esa P-N laf/k Mk;ksM dk izfrjks/k cgqr vf/kd gksrk gS\
4- ;ax ds f}fLyV iz;ksx esa fdl jax ds fy, fÝat pkSM+kbZ lcls de gksrh gS\
5- iryh fQYe ds jax dk dkj.k D;k gS\
6- fo|qr pqEcdh; LisDVªe ds fofHkUu Hkkxksa ds uke vko`fRr ds c<+rs Øe esa fyf[k;s\
7- fo|qr pqEcdh; LisDVªe ds fdl Hkkx dh Hksnu {kerk lokZf/kd gksrh gS\

Q.4 Write the answer in one word or one sentence. 1x7=7 vad

1. How does increase temperature affect the conductivity of a semi
conductor?
2. What is the order of thickness of depletion layer in a P-N Diode ?
3. In which bias does a P-N diode offer greater resistance ?
4. In young’s double slit experiment for which colour of light fringe width is
minimum ?
5. What is the cause of colours in thin films ?
6. Write the names of different part of electromagnetic spectrum in
increasing order of frequency.
7. Which part of electromagnetic spectrum have maximum penetrating
power ?

iz-5 fdlh fo|qr f}/kqzo ds f}/kzqo vk?kw.kZ dks ifjHkkf"kr dhft,- ;g vfn’k jkf’k gS 2 vad
;k lfn’k jkf’k\
Define dipole moment of an electric dipole. Is it a scalar or vector quantity?

fo|qr ¶yDl dks ifjHkkf"kr dhft, ,oa bldk SI ek=d fyf[k,\
Define electric flux and write its SI unit?

6

iz-6 vuqxeu osx dh ifjHkk"kk fyf[k,\ fo|qr /kkjk ,oa vuqxeu osx eas laca/k 2 vad
fyf[k,A
Define drift velocity? Write a relationship between the drift velocity and electric
current.
fof’k"V izfrjks/k ;k izfrjks/kdrk dh ifjHkk"kk fy[krs gq, budk SI ek=d ,oa foeh; lw=
Hkh fyf[k,A
Define specific resistance or resistivity. Write its SI unit and dimensional
formula.

iz-7 py dq.Myh /kkjkekih dh dq.Myh ds e/; ueZ yksgs dk ØksM D;ksa j[krs gSa \ 2 vad
Why a soft iron core is kept in moving coil galvamometer?

/kkjkekih esa pqEcd ds /kzqo vory D;ksa cuk, tkrs gSa\
Why the pole pieces of magnet are made concave in a galvanometer.`

iz-8 ,d 100 Ω dk izfrjks/kd 220 V, 50 Hz vkiwfrZ ls la;ksftr gSa 2 vad
(a) ifjiFk esa /kkjk dk rms eku fdruk gS\
(b) ,d iwjs pØ esa fdruh usV 'kfDr O;; gksrh gS\

A 100 Ω resistor is connected to a 220 V, 50 Hz ac supply.

(a) What is the rms value of current in the circuit?
(b) What is the net power consumed over a full cycle?

(a) A.C. vkiwfrZ dk f’k[kj eku 300 V gSA rms oksYVrk fdruh gS\
(b) A.C ifjiFk esa /kkjk dk rms eku 10 A gSA f’k[kj /kkjk fdruh gS\

(a) The peak value of ac supply is 300 V. what is the rms voltage?
(b) The rms value of current in an ac circuit is 10 A. what is the peak
current.?
7

iz-9 iw.kZ vkarfjd ijkorZu dh vko’;d 'krsZ fyf[k,A 2 vad
Write the necessary conditions of total internal reflection?

nk<+h cukus ;k esdvi djus ds fy, vory niZ.k dk mi;ksx D;ksa fd;k tkrk gS\
Why, concave mirror is used for shaving or makeup?

iz-10 izdk’k fo|qr izHkko dks ifjHkkf"kr dhft, ,oa blls lacaf/kr vkbUlVhu dk 2 vad
lehdj.k fyf[k,\
Define photoelectric effect and write einstein equation related to its?
nzO; rjaxksa dh dksbZ nks fo’ks"krk,a fyf[k,\
Write properties of any two matter waves?

iz-11 gkbMªkstu ijek.kq esa dsoy ,d gh bysDVªkWu gSa fdUrq mlds mRltZu LisDVªe 2 vad
esa dbZ js[kk,¡ gksrh gS] D;ksa\
Hydrogen atom contains only one electron but Emission spectrum of hydrogen
atom has many lines. Why?
;fn ijek.kq esa bysDVªkWu viuh d{kk esa fLFkj gks rks D;k gksxk\
What will happen if electron remain stationary in an orbit?

iz-12 ukfHkdh; fo[k.Mu vkSj ukfHkdh; lay;u esa nks eq[; varj fyf[k,A 2 vad
Write two main difference between nuclear fission and nuclear fusion.
dkj.k fyf[k,%&
1-ukfHkdh; fo[kaMu ds fy, dsoy U;wVkWu gh mi;qDr gksrk gSA
2-ukfHkdh; lay;u vHkh rd i`Foh ij ,d izk;ksfxd rFkk fu;af=r mtkZ lzksr ds :Ik esa
D;ksa iz;qDr ugha gqvk gS\

Give reason:-
1. For nuclear fission only neutron is preferred.
2.The nuclear fusion could not be used as an experimental and controlled source
of energy till now on the Earth.

8

iz-13 lekarj IysV la/kkfj= dh /kkfjrk ds fy, O;atd LFkkfir dhft,A 3 vad
Establish an expression for capacitance of the parallel plate capacitor?

xkWl dh izes; fyf[k, ,oa fl) dhft,\
Write and prove Gauss theorem?

iz-14 fdlh fo|qr ifjiFk ds fy, fdjpkWQ ds fu;e fyf[k,\ 3 vad
For any electric circuit write kirchhoff’s laws?

fdjpkWWQ ds fu;eksa ds vk/kkj ij OghLVksu lsrq dk fl)kar LFkkfir dhft,\
Establish the principle of wheatstone bridge in basises of kirchhoff’s law?

iz-15 10 V fo|qr okgd cy okyh cSVjh ftldk vkarfjd izfrjks/k 3 Ω gS fdlh 3 vad
izfrjks/kd ls la;ksftr gSA ;fn ifjiFk esa /kkjk dk eku 0-5 A gks] rks izfrjks/kd
dk izfrjks/k D;k gksxkA tc ifjiFk can gS rks lsy dh VfeZuy oksYVrk D;k gksxh\
A battery of emf 10 v and internal resistance 3 Ω is connected to a resistor. If
the current in the circuit is 0.5 A. What is the resistance of the resistor? What is
the terminal voltage of the battery when the circuit is closed?

dejs ds rki (27.0℃) ij fdlh rkiu vo;o dk izfrjks/k 100 Ω gSaA ;fn rkiu&
vo;o dk izfrjks/k 117 Ω gks rks vo;o dk rki D;k gksxk\ izfrjks/kd ds inkFkZ dk
rki xq.kkad 1.70x10-4 ℃ -1 gSA

At room temperature (27℃) the resistance of a heating element is 100 Ω What
is the temperature of the element, if the resistance is found to be
117 Ω given that temperature coefficient of the resistor material is
1.70×10-4 ℃ -1?

9

iz-16 nks ysal ftudh Qksdl nwfj;k¡ f1 vkSj f2 gSa laidZ esa j[ks x;s gSaA ;fn bl izdkj fufeZr
la;qDr ysal dh Qksdl nwjh F gks rks fl) dhft, fd 3 vad

= +

Two lenses of focal lengths f1 and f2 are kept in contact, if the focal length of the
combination if F then prove that

= +

fdlh xksyh; niZ.k ds fy, niZ.k lw= dh LFkkiuk dhft,\

Establish the mirror formula for spherical mirror?

iz-17 P-N laf/k Mk;ksM D;k gS\ P-N laf/k Mk;ksM dh dk;Zfof/k vxz vfHkufr vkSj Ik’p
vfHkufr esa fo|qr vkjs[k [khapdj le>kb,A 4 vad

What is P-N Junction diode? Explain the working of P-N Junction with circuit
diagram in forward and reverse bias.

fn"Vdj.k D;k gS\ fo|qr ifjiFk [khapdj P-N laf/k Mk;ksM dh iw.kZ rjax fn"Vdkjh dh
fØ;k le>kb,A
What is rectification? Explain the use of P-N Junction diode as full wave
rectifier with draw electric circuit diagram.

iz-18 VªkUlQkWeZj dk o.kZu fuEufyf[kr fcanqvksa ds vk/kkj ij dhft,& 5 vad
1- fl)kar 2- VªkUlQkWeZj ds izdkj
3- ifj.keu vuqikr ds lw= dk fuxeu 4- ukekafdr js[kkfp=
Describe a transformer under the following headings.

1. Principle 2. Kinds of transformer
3. Labelled diagram 4.Derive the formula for transformation
ratio.

10

izR;korhZ /kkjk tfu= dk o.kZu fuEu 'kh"kZdksa ds varxZr dhft,&
1- fl)kar 2- ukekafdr js[kkfp=
3- eq[; Hkkxksa ds uke 4- dk;Zfof/k

Describe an alternating current generator under the following headings.
1. Principle 2. Labelled diagram
3. Name of Main parts 4. Working

iz-19 la;qDr lw{en’khZ dk o.kZu 'kh"kZdksa ds varxZr dhft,& 5 vad
1- izfrfcEc cuus dh O;oLFkk dk fdj.k vkjs[k
2- vko/kZu {kerk ds lw= dh LFkkiuk tcfd vafre izfrfcac
(a) Li"V n`f"V dh U;wure nwjh ij cusA
(b) vuUr ij cusA

Describe compound microscope on following heads.

1. Draw Ray diagram of formation of image.

2. Derivation of formula for magnifying power when final image is formed.

(a) At least distance of distinct vision.
(b) At infinity.

[kxksyh; nwjn’khZ dk o.kZu fuEu 'kh"kZdksa ds varxZr dhft,A
1- izfrfcEc cuus dh O;oLFkk dk fdj.k vkjs[k
2- vko/kZu {kerk ds lw= dh LFkkiuk tcfd vafre izfrfcac
(a) Li"V n`f"V dh U;wure nwjh ij cusA
(b) vuUr ij cusA

Describe the astronomical telescope on following heads.
1. Draw Ray diagram of formation of image.
2. Derivation of formula for magnifying power when the image is formed at.
(a) Least distance of distinct vision.
(b) Infinity
11