JAC Class 11 Model Question Paper Physics

झारखंड बोर्ड

मॉडल पेपर

Class 11

Model question
CLASS-XI
Subject - Physics
Total no. of questions - 35 Maximum marks - 70

No. of Marks
Unit Title question (1x2)
Unit -1 Physical World & Measurement 02 04

Unit - II ^inematics 05 10

Unit - III Laws of Motion 05 10

Unit - IV Work, Energy and Power 03 06

Unit - V Motion of system of Particles & Rigid Body 03 06

Unit - VI Gravitation 03 06

Unit-VII Properties of Bulk Metter 05 10

Unit - VIII Thermodynamics 02 04

Unit - IX Behaviour of perfect Gas & Kinetic Theory of Gases 02 04

Unit - X Oscillations & Waves 05 10
Total 35 70
Set- I
Phvsics(Cl iss - XI)
Following questions are multiple choice. Mark the correct choice.

Each question have same marks (2 marks)

Total number of questions = 35

Total marks (35 x 2)=70
PPR !R<bcM t| ^t ^^cbcM ^R ft^TFT ePTT^ I
^PIPT 3^^^> ^ f (2 3fcf>)
^>\ ^l=35

(35 x 2)=70

1. 1 Newton is equivalent to -

(A) 104 dyne (B) 105 dyne(C) 106 dyne (D) 107 dyne .

(A) 10 (B) 10 (C) 106

2. Dimensional formula for frequency -

(A) M~lL3r2 (B)MZT3r2 (C)ML~2T2(D) M^T1.

(A) M~lL2r2 (B) Mf3r2 (C) MU2T2

3.What does the speedometer of a vehicle read/measure?

(A) Average Speed (B) Average velocity
(C) Instantaneous speed (D) Instantaneous velocity .

ft>^ W^^T M ^Mkl^ilo< ^W WW t?
(A) ^f^^f^ ^lcl (B) ^f^^RT cpT (C) clR^f^^lW Wei (D) 'ctR^Tf^TW M I

4.Which of the following is a vector quantity -

(A) Time(B) Distance (C) Displacement(D) Speed

(A) WT (B)^ff (C)ft^FT (D) Wei I
5.Relation between linear velocity (v) and Angular velocity (co) -

(A)v=rco (B) co = rv (C)r = vco (D) v = -|.

V /V /

= rco (B) 6^ = rv (C)^ = v<y (D) v = —.
r

6.Rate of change of angular velocity is called -

(A) Angular momentum (B) Angular displacement
(C) Frequency(D) Angular acceleration .

(A) cfM^^ ^fcpr (B) cf^k fctWFT (C) ^TT^frJ (D) Wf%T
7.Relation between time period (T) and frequency (u)

Tv 'T2i

(T) ^^ 3n^frl (u) ^ ^FRI t -

11t>

8. Newton's first law of motion define -

(A) Energy (B) Work(C) Inertia(D) Moment of inertia

WT ^T ^RW WW W^cll t -

(B)wrf

9.An object of mass 2kg is moving with acceleration of 50 cm/s2. Then force acting on it

(A) IN(B)10N(C)100N(D) 25 N.
2 Rbciliim ^^oti^M ftt cR^ 50 ftftto/fto2 ^^ ?cR^ ft ftftlFT 11 ^fl T? cElft cfTeTT TeT

(A) l^T(B) 10 ^T (C) 100 ^ (D) 25 ^11
10.In case of uniform motion acceleration is

(A) Zero(B) Positive (C) Negative (D) None of these .

^ TRFT ftrT ftt 3RR^IT ft ^^^ftclT t I
(A) ^(B) tHIcH^(C) ^^WTcf)(D) ^^ft ft ftft
11. A constant retarding force of 50 N is applied to a body of mass 10kg moving initially
with a speed of 10 ms"1. The body comes to rest after -
(A) 2 second (B) 4 second (C) 6 second (D) 8 second .
50N ^\ f^^^^ ft^cfy 6feTf 1oft^^?/ftcF^ ftt t^ ft ^lftftcfJ ^ ft ft^^ cfR ^ft 10 fft¥T ftj*iM ft
T^ cftT^lT vjTKTT 11 fe^^^ft ^^^l ^ cf^ fft^g

12. The direction of force of friction -

(A)Perpendicular to the direction of motion of object
(B)Along the direction of motion of object
(C)Opposite to the direction of motion of object
(D)None of these .
^cl ftt
(A) cR^J ftt ^TfcT ft ^^lT ft cRcfft(B) cR^ ftt ^^cl ft fen ftt
(C) cR^ ftt ^^rl ft f^TT ft fftlftrl(D) ^ftf ft ftft ^ I
13. Out of the following, which is not the unit of energy -
(A) Joule(B) Kilo-Watt(C) Calorie(D) Electron-Volt.

ft ft^^ ^nft cf)T ^T^ ^ftt t -

(B) ^bcftclie(C)ftfttft
14. Two bodies of masses lkg and 2kg have equal momentum. Then the ratio of their kinetic

energies is -
(A) 1:2(B)2:l(C) 1:V2(D) 1 :4.
ftftT cflftt ft cR^ftf ft j^oiiHH ?^^T: Ug ftk 2^ 11 ^iftt ftrRT \3vftftf c^[

(A)l:2(B)2:l(C) 1:^2(D) 1 :4.
15. In perfectly elastic collision-

(A)Only momentum is conserved
(B)Momentum and kinetic energy both are conserved
(C)Neither momentum nor kinetic energy is conserve^ •

(D)Only kinetic energy is conserved .

(A) feel fed feffe ^T 1 (B) fed fe dfed ^M feff feftd Ml 11
(C) d eft fed 3j^^ d ^1 dfen feife ^T 11 (D) feel dfed dM feffe

16. S.I. unit of moment of Inertia is

(A) Kgm 1
(C) Kgm (D) Kgm2

dTd^-d^j^f ^I S.I. dTW t -

(A) ffelT-fefe (B) fedT ^^^"1 (C) fedT (D)ffen
17.A couple produces-

(A) Only linear motion (B) Only ratational motion

(C) Linear and ratational motion both (D) No motion.

(A) feel Mm dfrl^(B) feel
(C) Mm fe ^fe dfct feff(D) c^^ fet wi
18.The centre of mass of a body-

(A) Lies always at the geometrical centre (B) Lies always inside the body
(C) Lies always outside the body(D) May lie within or outside the I

(A) fedT ^fefe fe^ d^ fed fen t(B) fedT fed d> dF^^ fed fen t
(C) fedT fed cj> efT^^ fed fen t(D) fed c in ^^ fe^ ^t ^rn^n

19.Kepler's second law is a consequence of-

(A) Conservation of energy(B) Conservation of linear momentum
(C) Consevation of angular momentum (D) Conservation of mass

fevR cjn fefm fed m mRuih t -
(A) dM M^d (B) Mm fed M^d (C) fefed fern M^d (D) ^^^dm m
20.Which of the following statements is correct regarding the gravitational force ?

(A)The gravitational force is dependent on the intervening medium
(B)The gravitational force is a non-conservative force

(C)The gravitational force forms action-reaction pair
(D)The gravitational force is a non-central force .

fen ^ ^ fen-^n ^^m ^tnfe^ eier ^> fe^ ^ fet t ?
(A) 4j^>Mifeui ^ei n^fe^^ n^^m ^? fe^^ n^^ t (B) ^ife^t ^ fen t

(C) 4|>^ifeui ^ei fen-fefen ^^i t(D) rer ^fefe ^ei fen 1

21.S.I. unit of ~Gi is -

(A) N rn2 Kg~2 (B) N m Kg~2 (C) N m Kg~l (D) N m2 Kg~2.

~G' cffl" S.I. ^nW -

(A)Nm-2Kg-2 (B)NmKg~2 (C) NmKg~l (D)Nm2Kg~2.

22.Solids which break above the elastic limit are called -
(A) Brittle(B) Ductile(C) Malleable(D) Elastic.
ct to vift w^rn to ^ ^ vsn^ t, ^en^ t -

(A)^^(B)cHT(C) 3TM^ cl^^r (D)
23.The shear modulus is also known as -
(A) Bulk modulus (B) Young's> modul

(C) Modulus of rigidity (D) Poisson' s ratio.

^rw^r ^to eft ^n? ft w[^TMt-

(A) ^^cFT ^^^^TC^RTT ^TO (B)^^T W^R O
^^
(C)^cTT ^to (D) Mto^ 3 I
24. Unit of Pressure -
(D) N m2 .
(A) Dyne (B) Pascal (Pa) (C) N-m

25.Hydraulic brakes are based on which law?

(A) Pascal's law (B) Torricelli's law (C) Newton's law (D) Boyle's law.

"^^ xfifef^ ^^ fto ^ ^p^ cf^?TT t?
(A) Wf>ef c^T ftol (B) dlR^c^l c^ ftol (C) ^^T c^ ftol (D) toel ^
26.Out of the folio wing, which is the fastest mode of transfer of heat?
(A) Conduction(B) Convenction(C) Radiation(D) A and B

tor ^ f^^r ^trt ^^tt ^] ^imh^i ^t to ^^n t ?
(A) :^eFT(B) to^T(C) fcrf^^T(D) A af^^ B
27. The zeroth law of thermodynamics leads to the concept of-

(A) Internal energy (B) Heat content(C) Pressure(D) Temperature
^f^R ^ e^^ toeM^II 3^^R ^^ft 11

(A) 31 HRch ^ft(B) ^rf ^Tft(C) ^f(D)

28. In Adiabatic process, relation between volume (v) and pressure (p)

(A) PV = Constant (B) - = Constant (C) PV" = Constant (D) PV = Constant.

^?FT (Adiabatic process) ^, 3T^RH (v) ^TSTT ^f (p) cf> t-

p/-^
~v~ (D)
29.Value of universal gas constant (R)
(A) 8.31 JmoVK'1 (B) ^^JmoVK'1 (C) 6.67JmoVK'1(D) 3A5JmoVK~x

(A) 8.31 ^mor1^-1 (B) 8.QJmorlK~l (C) 6.67JmoVR-1(D) 3A5JmoVK~^

30.If the pressure and the volume of certain quantity of ideal gas are doubled, then its

temperature

(A) Become doubled(B) Become one-fourth

(C) Remains constant(D) Become four times.

(A)^^T(B)^-^f^T^(C)^^?T(D)
31.Time period of simple pendulum

(A)r = 2* p-

cftoTcf) cJTT

(D)r=-
1 /

32. Frequency of second pendulum.
(A) 0.5Hz(B) 1 Hz (C) 0.25 Hz (D) 2 Hz
eftelcf) eft ^neffer ^^ft t

(A) 0.5Hz(B) 1 Hz (C) 0.25 Hz (D) 2 Hz
33. Which of the following expressions does not represent simple harmonic motion?

(A) ^ = ^4cos^yt+Bsin6>^(B) x = Acos(a>t+a)

(C) x = Bs\n(cot + j3)(D) x = A sin co t cos2 co X.

f^R ^ ^ cft^-^fT c^ftfcf) ^RcT ^tlcfef ^fct eft e^^f) ^ft cfRdT t?

(A) ^ = ^cos^yt+Bsin<^^(B) jc =

(C) x = Bs\n(cot +p)(D) ^ =
34. A progressive wave is represented by y = 5sm{}^nt-2nx)^ where ^and y in meter and

t in second. Then maximum particle velocity -
(A) 100;r m/s(B) 200;r m/s (C)400^r m/s (D) 500;r m/s .

•7

cf^T cj^t ^ = 5sin(100^-2^-Jc)^RT f^^^^ vjTRTT t, ^F xtjcf ^|
1 cf^T cJJT cpT

(A) IOOtt^o/^o(B) (D) 500^
35. The Doppler effect is applicable for -

(A) Sound waves only (B) Light waves only
(C) Both Sound and Light waves (D) None of these

^^R ^M oTFJ ^lcTT t -
(A) cpcfcT ^c|M cR^TT ^P tc^ (B)c^^Rr\ M>^T rl^1!

(Q ^ITm k/cj ^^cpi^i c^l^l ^^^11 ^p t^^

ANSWER SHEET OF SET -1
1 B 18 D
2 D 19 C
3 C 20 C
4 C 21 D
5 A 22 A
6 D 23 C
7 A 24 B
8 C 25 A
9 A 26 C
10 A 27 D
11 A 28 D
12 C 29 A
13 B 30 D
14 B 31 A
15 B 32 A
16 D 33 D
17 B 34 D
35 C