HBSE Class 12 Physics Question Paper 2017 Set C

CLASS : 12th (Sr. Secondary) Code No. 2028
Series : SS-M/2017

Roll No. SET : C
HkkSfrd foKku
PHYSICS
[ Hindi and English Medium ]
ACADEMIC /OPEN
(Only for Fresh Candidates)
(Evening Session)
Time allowed : 3 hours ] [ Maximum Marks : 60
• Ñi;k tk¡p dj ysa fd bl iz'u&i= esa eqfnzr iz'u 18 gSaA
Please make sure that the printed question paper are contains 18
questions.
• iz'u&i= esa nkfgus gkFk dh vksj fn;s x;s dksM uEcj rFkk lsV dks Nk= mÙkj&iqfLrdk ds
eq[;&i`"B ij fy[ksaA
The Code No. and Set on the right side of the question paper should be
written by the candidate on the front page of the answer-book.
• Ñi;k iz'u dk mÙkj fy[kuk 'kq: djus ls igys] iz'u dk Øekad vo'; fy[ksaA
Before beginning to answer a question, its Serial Number must be written.
• mÙkj&iqfLrdk ds chp esa [kkyh iUuk@iUus u NksMsa+A
Don’t leave blank page/pages in your answer-book.
• mÙkj&iqfLrdk ds vfrfjDr dksbZ vU; 'khV ugha feysxhA vr% vko';drkuqlkj gh fy[ksa vkSj fy[kk
mÙkj u dkVsaA
Except answer-book, no extra sheet will be given. Write to the point and do
not strike the written answer.
• ijh{kkFkhZ viuk jksy ua0 iz'u&i= ij vo'; fy[ksaA
Candidates must write their Roll Number on the question paper.

2028/(Set : C) P. T. O.

(2) 2028/(Set : C)
• d`i;k iz'uksa dk mÙkj nsus lss iwoZ ;g lqfuf'pr dj ysa fd iz'u&i= iw.kZ o lgh gS] ijh{kk ds
mijkUr bl lEcU/k esa dksbZ Hkh nkok Lohdkj ugha fd;k tk;sxkA
• Before answering the questions, ensure that you have been supplied the
correct and complete question paper, no claim in this regard, will be
entertained after examination.

lkekU; funsZ'k %
(i) ç'u-i= esa dqy 18 ç'u gSaA
(ii) lHkh ç'u vfuok;Z gSAa
(iii) ç'u la[;k 1 esa 1-1 vadksa ds ckjg (i-xii) cgqfodYih; ç'u gSAa çR;sd ç'u ds pkj
laHkkfor mÙkj gSA vkidks blesa loksZÙke mÙkj pquuk gS vkSj ml mÙkj dks viuh mÙkj&iqfLrdk
esa fy[kuk gSA
(iv) ç'u la[;k 2 ls 10 rd vfry?kq mÙkjh; ç'u gSa rFkk çR;sd ç'u 2 vadksa dk gSA

(v) ç'u la[;k 11 ls 15 rd y?kq mÙkjh; ç'u gSa rFkk çR;sd ç'u 3 vadksa dk gSA

(vi) ç'u la[;k 16 ls 18 rd nh?kZ mÙkjh; ç'u gSa rFkk çR;sd ç'u 5 vadksa dk gSA

(vii) ç'u-i= esa lexz :i ls dksbZ fodYi ugha gSA rFkkfi 5 vadksa okys rhuksa ç'uksa esa vkUrfjd
p;u çnku fd;k x;k gSA ,sls ç'uksa esa ls vkidks fn, x, p;u esa ls dsoy ,d gh ç'u
djuk gSA
(viii)dSYD;qysVj ds mi;ksx dh vuqefr ugha gSA vko';d gksus ij] y?kqx.kdh; lkjf.k;ksa dk ç;ksx
fd;k tk ldrk gSA
General Instructions :
(i) There are 18 questions in all.
(ii) All questions are compulsory.
(iii) Question number 1 consists of twelve (i-xii) multiple choice questions
each of 1 mark. Each question has four possible answers. You have
to select best answers out of these and write in your answer-sheet.
(iv) Question Numbers 2 to 10 are very short answer type questions and
carry 2 marks each.

2028/(Set : C)

(3) 2028/(Set : C)
(v) Question Numbers 11 to 15 are short answer type questions and
carry 3 marks each.
(vi) Question Numbers 16 to 18 are long answer type questions and
carry 5 marks each.

(vii) There is no overall choice. However, an internal choice has been
provided in all three questions of 5 marks each. You have to attempt
only one of the given choice in such questions.

(viii)Use of Calculators is not permitted, if required you may use
logarithmic tables.

[ cgqfodYih; iz'u ]
[ Multiple Choice Type Questions ]

1. (i) fdlh 3 × 1012 Hz vko`fÙk okyh rjax dh rjaxnS?;Z gksxh %
1
(A) 3 × 10 8 eh0 (B) 3 × 10 4 eh0
(C) 10 −4 eh0 (D) 10 4 eh0

The wavelength of a wave having frequency 3 × 1012 Hz will be :
(A) 3 × 10 8 m (B) 3 × 10 4 m
(C) 10 −4 m (D) 10 4 m
(ii) ,d lh/ks pkyd esa ;fn I /kkjk çokfgr gks jgh gS] rks blls r nwjh ij pqEcdh; {ks= cy
gksxk % 1
µ0I µ0I
(A) (B)
2πr 2r
(C) µ 0nI (D) 'kwU;
The magnetic field at distance r from a straight conductor of infinite
length carrying current I, is given by :

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(4) 2028/(Set : C)
µ0I µ0I
(A) (B)
2πr 2r

(C) µ 0nI (D) Zero

(iii) ,d yksgpqEcdh; inkFkZ dh pqEcdh; ço`fÙk gksrh gS % 1

(A) vf/kd o _.kkRed

(B) vf/kd o /kukRed

(C) y?kq o _.kkRed

(D) y?kq o /kukRed

Magnetic susceptibility of a ferromagnetic substance is :

(A) large and negative

(B) large and positive

(C) small and negative

(D) small and positive

(iv) rkieku esa o`f) ds lkFk ,d pkyd dh pkydrk % 1

(A) ogh jgsxh

(B) de gksxh

(C) c<+sxh

(D) de ;k c<+ ldrh gS

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(5) 2028/(Set : C)
With increase in temperature the conductivity of a conductor :

(A) remains same

(B) decreases

(C) increases

(D) may increase or decrease

(v) /kkfjrk dk SI ek=d gksrk gS % 1

(A) oksYV (B) ,sfEi;j

(C) dwykWe (D) QSjM

SI unit of capacitance is :

(A) Volt (B) Ampere

(C) Coulomb (D) Farad

(vi) ,d P fo|qr~ vk?kw.kZ okys f}/kzqo dks fo|qr~ {ks= E ls 90° dks.k ij j[kus ls yxus okyk
cy vk?kw.kZ gksxk % 1

(A) PE cos θ (B) PE

(C) P (D) E
The torque acting on an electric dipole of dipole moment P placed at
an angle 90° to the electric field E will be : 1

(A) PE cos θ (B) PE

(C) P (D) E

2028/(Set : C) P. T. O.

(6) 2028/(Set : C)
(vii),d TV Vkoj dh Å¡pkbZ h gS] blls fdruh nwjh rd çlkj.k fd;k tk ldrk gS] ;fn
i`Foh dh f=T;k R gS \ 1

(A) Rh (B) 2Rh

(C) 2Rh (D) Rh

A TV tower of height h can broadcast program upto a distance
(given radius of earth R ) :

(A) Rh (B) 2Rh

(C) 2Rh (D) Rh

(viii)gkbMªkstu ijek.kq dh vk;uu ÅtkZ gksrh gS % 1

(A) 1 eV (B) 10.2 eV

(C) 13.6 J (D) 13.6 eV

The ionization energy of hydrogen atom is :

(A) 1 eV (B) 10.2 eV

(C) 13.6 J (D) 13.6 eV

(ix) 10 4 oksYV ds foHkokarj }kjk Rofjr fdlh bysDVªkWu dh ns-czkWXyh rjaxnS?;Z gksxh % 1
o
(A) 1 eh0 (B) 12.27 A
o
(C) 0.1227 A (D) 1.227 eh0

What is the de-Broglie wavelength associated with an electron
moving under a potential difference of 10 4 volts will be :

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(7) 2028/(Set : C)
o
(A) 1 m (B) 12.27 A
o
(C) 0.1227 A (D) 1.227 m

(x) fuEu esa ls fdlds fy, fujks/kh foHko vf/kdre gksxk \ 1

(A) uhyk (B) gjk

(C) yky (D) ihyk

For which of the following stopping potential required is maximum
?

(A) Blue (B) Green

(C) Red (D) Yellow

(xi) ,d çdk'k rUrq dh dk;Ziz.kkyh fuHkZj gksrh gS % 1

(A) ijkorZu ij

(B) iw.kZ vkarfjd ijkorZu ij

(C) viorZu ij

(D) dksbZ ugha

The working of an optical fibre depends upon :

(A) Reflection

2028/(Set : C) P. T. O.

(8) 2028/(Set : C)
(B) Total internal reflection

(C) Refraction

(D) None

(xii),d lkekU; ekuo us= ds fy, lqLi"V n`';rk dh vYire nwjh gksrh gS % 1

(A) 0.25 eh0 (B) 25 eh0

(C) 2.5 eh0 (D) 1 eh0

For a normal human eye the least distance of distinct vision is :

(A) 0.25 m (B) 25 m
(C) 2.5 m (D) 1 m

[ vfry?kq
vfry?kq mÙkjh; ç'u ]
[ Very Short Answer Type Questions ]

2. ,d ysal dh {kerk D;k gksrh gS \ bldk SI ek=d fy[ksaA 2

Define power of a lens and give its SI unit.

3. çdk'k&fo|qr~ mRltZu ds fy, vkb±LVhu ds lehdj.k dk o.kZu djsaA
2

Explain Einstein's equation for photoelectric emission.

4. NOT }kj D;k gksrk gS \ bldh lR;eku lkj.kh fy[ksaA 2

What is NOT gate ? Write its truth table.

2028/(Set : C)

(9) 2028/(Set : C)
5. P o N-izdkj ds v/kZpkydksa esa vUrj Li"V djsaA 2

What is the difference between P and N-type semiconductors ?

6. vk;ke ekMqyu dk fp= dh lgk;rk ls o.kZu djsaA 2

Explain amplitude modulation with the help of diagram.

7. fo|qr~ ¶yDl ¼izokg½ ds fy, xkml dk fu;e D;k gS \ 2

What is Gauss's law for electric flux ?

8. fdjpkWQ~ ds laf/k fu;e dk o.kZu djsaA 2

Explain Kirchhoff's junction rule.

9. fo|qr~ pqEcdh; çsj.k D;k gksrk gS \ o.kZu djsaA 2

What is electromagnetic induction ? Explain.

10. lw{erjaxksa ,oa xkek&fdj.kksa ds nks-nks mi;ksx fy[ksaA 2

Write two uses each of microwaves and Gamma rays.

[ y?kq mÙkjh; ç'u ]

[ Short Answer Type Questions ]

11. /kkfjrk dh ifjHkk"kk fy[ksa rFkk A o B fcUnqvksa ds e/; rqY; /kkfjrk Kkr djsa % 3

2028/(Set : C) P. T. O.

( 10 ) 2028/(Set : C)
2 µF
A
B
4 µF
2 µF

2 µF

Define capacitance and calculate equivalent capacitance between
points A and B :

2 µF
A
B
4 µF
2 µF

2 µF

12. ,d OghVLVksu lsrq dk] fp= dh lgk;rk ls o.kZu djsaA 3

Explain Wheatstone bridge with the help of a diagram.

13. ,d P-N Mk;ksM dk v/kZ&rjax fn"Vdkjh ds :i esa mi;ksx o.kZu djsaA 3

Explain the use of P-N diode as half-wave rectifier.

14. ,d lkekU; lw{en'khZ dk fdj.k vkjs[k cuk,¡ rFkk vko/kZu dk lw= fy[ksaA 3

Draw the ray diagram of a simple microscope. Write expression for its
magnification.

15. çdk'k&/kzqo.k D;k gksrk gS \ ;fn fdlh ek/;e dk viorZukad 3 gS] rks /kzqfor dks.k Kkr
djsaA 3

2028/(Set : C)

( 11 ) 2028/(Set : C)
Define polarization of light. Calculate the angle of polarization for
medium having refractive index 3.

[ nh?kZ mÙkjh; ç'u ]

[ Long Answer Type Questions ]

16. jsfM;ks,sfDVo fu;eksa dk ç;ksx djrs gq,] blds fy, lehdj.k cuk,¡ rFkk fLFkjkad dh ifjHkk"kk
fy[ksaA 5

Derive equation for radioactive decay using laws of radioactivity and
define decay constant.

vFkok
OR

ukfHkdh; fo[k.Mu ,oa ukfHkdh; lay;u dk o.kZu djsa rFkk buds mi;ksx fy[ksaA 5

Explain nuclear fission and nuclear fusion and give their uses

17. ,d py dq.Myh xSYouksehVj dks ,sehVj ,oa oksYVehVj esa cnyus dk o.kZu djsaA 5

How a moving coil galvanometer can be converted into ammeter and
voltmeter ?

vFkok
OR

(a) ck;ksV~-lkoVZ fu;e D;k gksrk gS \ 3

What is Biot-Savart's law ?

2028/(Set : C) P. T. O.

( 12 ) 2028/(Set : C)
(b) fofHkUu izdkj ds pqEcdh; inkFkks± dh ifjHkk"kk fy[ksa rFkk ,d-,d mnkgj.k fy[ksAa 2

Define different types of magnetic materials and give one example
in each case.

18. (a) vU;ksU; çsj.k D;k gksrk gS \ vU;ksU; çsjdRo ds xq.kkad dh ifjHkk"kk fy[ksaA 3

What is mutual induction ? Define its coefficient.

(b) ,d dq.Myh esa vU;ksU; çsjdRo Kkr djsa] ;fn mlds ikj dh dq.Myh esa /kkjk 50 A/s
cnyus ij 10V fo|qr&~ okgd cy (emf) mRiUu gksrk gSA 2

Calculate the mutual inductance of a coil when 10 V induced emf is
produced in it due to change in current at the rate of 50 A/s in the
neighbouring coil.

vFkok
OR

,d A.C. tfu= ds fl)kar rFkk dk;Zfof/k dk o.kZu djsaA 5

Explain the principle and working of A. C. Generator.

S
2028/(Set : C)