Uttarakhand Board Class 11 Question Paper 2025 Physics

UTTRAKHAND BOARD

Question Paper

ql(l{<f> ~ 2024-2025 (AJtnual Exam
Z024-2025)
~tt ~ _ ~Rlcfi ~ff ll~ (Subject - Ph
ysics)
3 ~
tiff ~_ cf;8lT - •11 (Class -11)
~ _ 70
uu "-'c f;' (~a ctio n-A }
. 1. ~ ~q;{i-4 ~ - Choose the cc;
rect opt ion . 1x10=10
(i) tt'il.=t ~•Hafl ~ ~l~l'TI ~ !" '
( a ) ~ ~ (b) ~ . ~ (c) tRlT -. ,. .
~ . q;1®<'f, ~ (d) "i@', ((Jxo1
The pair of the quantities havl~g sam
e dimensions ls-
(a) Displacement, Velocity
(b) Time, frequency
<•> wavelength, focal lenght l (d) Force, accele
(ii) ~ '1ffit 7 ~ o fSIG-41 lf@ ?{'tl_lct>I' ration
-~ 1' @ q;t ~~ 1q ;, t- < 'T~ $ 1%:tt~ tR tq ~ I ffl tt<fcfr<. t
An an
t is crawling-on the rim of a circ ula r
displacement of the ant in half tound is~ path of radius 7 cm . The
.
(a) 12 _ • {b) 13 . ~ . (c) 10
(iii) g<fiRI ctft' -ag\il (i) 14.
gfi\;~1~ ~- -·~,
(a) ~jdfHiofttt • (b) ~ •'\ (c) \'J@'"lof1~ (d) ,1~:A)<'1
The spontaneous processes of,~ature
are-
. (a) Irreversible (b) static ~ t( (c) reversible (d) dynamic
(iv) Gi"tq " dlN lf ~-- . ~ •
(a) qRqd-1 q;r ~
Inertia refers to-
(b) '1Gcil i .
(c) ~ ~ 311~14) . (d) ~ 1Tfa
-

(a) resistance to change (~~~ll_ness
(v) qg aft-ea ~ 'Gft ~ , ~ (c) ease of motion (d) slow motion
• aq;it,q "6'lf q1x =ttctRfl t, <1>5
(~} ~ -~ ~ (b) ~1 jm ~" (I) 6116) t-
The average distance a molecule can.trav
~- !im ~ (d) ~~ -c- 1~ -1~
el without colliding is called the- •
(a) mean free distance (b) mean free motion
(c) mean free path (d) mean free length
(vi) l,~ clft ttd a crx· ~ ~ q)f qGt.
\i,iU ( 'tR l{e2fl' q)- cf>NU( \ffl 'tR ~
t
-. 63 N 11{~ <ti' amfr ~'1'41 ~ ◄xl
◄x
qff fl ·!f<>cqtcptfo1 -~ fchd~I ~
. . A body weight 63 .N on the surfac ?
e bf the eart~ .. What's. the· gravitational
force on it due to the earth at a height .
equal to half ttie radius of the earth?
_ (a) 18N • {b) _128N
(vii) ·'tlrfi clft ~ ~hclt<l>N ~ cf>T <1>1-
O <•> 28N (d) -180N
<01. t-- • .
(a) ~ (b) •-~~l'idl {c) _..._'ffl~'l,r-T"·a ~ {i) .1P5 ~'il q
Wa ter .dr:ops· are spherical becaus
e t;,f~
{a) Elasticity {b) Viscosi~ (c) Termin
al velocity (d) surface tension
(viii) ~ ~ d~ •I~ '1_164'1. cf) ~ ff
~ 1frq_ <1fl' ~ t', Rit'tl~· cf>clidx ff l ~-
Wavelen_gth of the wave. is· the dis
tance between two particles of
the medium having phase ~ifference
of- _ J',:
(a) 37t (b) O
! ] , ~ - ... • •
•
(a) 21t • ,. • • (d).. 1t
4-'IA~cl:t..,,..,.,-~ ~ # c:T q;i/iff cm- ~w •
(A )'~ cbNOJ (R)ctt wrr # ,~~,~'%~a
flb47 7fllT ~ I ff i ~ ;1r-ci fql}- ~ •
q} '1/j'<'II~ '1lfcbct i/it_t
Note- In following question two statement
s are labelled as Assertion (A) and Rea-
son (R). You are required to choose any
_one of the following four responses.
(a) • 3W i~F ((A ) ~ cblx 0 1 (R) ~ ~
~ ~ R, A cCf "fT5f &11~1 cbxcil ~ I
Bott) Assertion and Reason are correc
t and the Reason is ·a correct
explanation of the assertion. •
(b) 3@ t~. , (A )~ 'cpROf {R) ~~ i~ .
• (1)
R, A ctr ~ clll&ll ~ clRffi ~ I

.. ,·-
1-------

"
Both Assertion and Reason ,re correct but Reason is not a correct
explanation of the Assertion} _ . . .
(c) ~ (A)~ t ~~ 1 <f>NOJ (R) 31+1~ t I A 1s correct, ~ 1s incorrect.
(d) aifilcbl!M (Ad,;-; cfSJ\!OI (R) ~ ~ t- I Both A ~nd R ar~ incorrect
(~) ~ (A) : ~ ct; Si<4¥!Ft Cfif _~ erg- ~ t urgt ~ <f>T ~
~<4'111 ~ liAT Gtldl t I • __ .
qjji(OI (R} : R>~ lR9 <t>t ~6Q'11➔ ~ cm .:tt1 tr 'ticba,, ufflT ~ ~~'1191 ~ m~
Assertion (A) : Center of mass of an o~ject is a point where the whole
mass of the body is assumed to be concentrated.
Reason (R) : Centre of mass of an object cannot lie where there is no mass.
(x> ~ (A~~4 ;1 ~ \ti~ ~ t I •
o (f)f'(Ot (R) : diGtf q;)- t.l~Of ~ ~ '11~~, 'GIT 'tlif>dl t f
Assertion (A) : Frictional forces are conservative forces.
• Reason (R) : Potential en~, ~n be associated with frictional force.
GUI 6tr (Section-B) Ptfttta ~ ~nite Answer Type Questions.)
2. ~ wix ffl ~ ~ cpl ffl 'tl'il1 t I GT;ff 11 ~ fcht1c6l ~ ~ t? 1
Acar and a truck have the same momentum. Which of two have greater speed?
3. ~ecft t>-<°$ ~~~3 1ttm~ ~q<t> ~t-ar~ C<M-< Ml~ffii rtm$kt J1~1
lftwo bodie s~together after the collision, will collision be elastic or inelastics? -
4. ~ <6 ~~cill<f>~Uf cn;f cfi' cf>l-<01 W tR ~~ q)f llA cfllT t ?0 .1
What is the value of torque on the planet due to the gravitational force of sun?
5. 'ti~m qfr ml ll, ~ ~l'ti'1191 tt14i 6@T t, clii ~ Scl~I -q ~ i1IGcl atlcf>lfii -q
m
m uf@ ~ ~14ct>) ~ -lflff '16~tl g)cfr t, cflU ? 1
On a winter night, you feel
sky is clear. Why? at IQ°
wa.J:J\
wh111n
.t,t
~tf
s,eover the skitY[) ~ 1 1
ctr ctr,f-t ~ r~ ~
-aa;g..-411' (Section-CJ ~"=a ~4-~ ~Q/J ShortAnswertype Qu~ons.1,_
6. ~ 11)- ftt4l4 ~ ~ - ft,1t~13T) 'IRlut ~ ~) ~t\L1T 2 :
Find the dimensional fonnulae d- (a) Kinetic energy (b) Pressure
1. 1ofchtwt)i11~ ~6Q'119i cfiT~ ~ o.~ .flex c2t1t1 <fm ~~- q l1fcf ~rte 1000
-qcfct>-< <'l•lldl t I ~ ~f'G4> ~ ~ ~ tq¥(UI ~ •101~1 qR.I 2 .
A body of mass 10 kg revolves in''a circle of diameter 0.4m making 1000
• revolution per minute; CaJculatetits linear velocity and centripetal acceleration.
61fl"ill/Or
~ -ij ~-tt 'il4 qs1; I ffi ll ·R&1Q 1P) ~ I
1
s-
,. •
,. ,
#;~
anq ~ cfflif ~ ~ Pf &t>~ Pt<t>1c.w1a ~ ? f: • ~ • • • ~
In Figure shows displacement-time curves I and II. •; f;i;~
What conclusions do you draw from these graphs? ~ , . •
8. •IRtut t:f'fvr ~ t°? cfllT ~ ~-~i:11mG1.=t ~ • •"-------+

• 9. ~~~f clut tt~<t> lR~ll° $ ~cpR aRf~ ~~'$ r
•1°11l <fRl"q ;R<P1 ~~'1l1 400. t~~~~-~2~~1 2
calculate the work done by a caragainst gravity in moving along a straight hori-
zontal road. The mass of the car is 400 kg and the .distance moved is 2m.
.
10. tl'fSll~Q fcp <f>'lufl~ m
~'<~01 ct)- ~cHid cf>T z;rr;r _. ~ ~ ~.1-fl1-
ifTG3TCA'~tR~~.ffl"ufR\l"~? ~~>- \ ~a;, r·~~ -·v <-~~~
• Explain how a cat is able to landbn its feet after a fall taking advantage of
the principl~ o! ~nservation of angular momentum ? •
11. 'g' ~ 'G' ~ ~c!ltf ~,~a cCIR;s~ t establish relation between •g• and 'G'. 2
12. 4It<t><-t cpl f.?l~i:t tt'iltl~( : I Explain Pascal's Law. • 2
~2)

J\I

13. l!ili ~ ~ M f.!lcf>1ii cm 100 7(fc f ~~ i316,'T ~ '6~m ~ 1~ P1<1>1zi
1

. 75~~~~~~~a,~drt~,3.ti m~~~~~~irft?2
An electric heater supplies heat to 8 sy5lem at a rate of 100 W. if system
performs work at.a rate of 75 joules per second. At what rate is the internal
energy Increasing ? 3f~Cfl/or.
~ ~Gt~~ cf>T ~'<qlvil ~ ~ ~ , cffl' ~ ~ m7JT ~ tm? [email protected] ~ I
If a refrigerator's door is k~t open, wiH t h e .
become cool or hot? Explain.
14. ~ itfl c$ ~3TI ~ cf'f-~-~ ~ & 6T7fi, $1Q~)G19i 'liT ~ ?
q,ji(Oj 1ft .,a,~ti, ~ or-~ ., ~z 2 ~
Molecules of which gas will possess higher r.m.s. speed, hydrogen or
\ helium ? Give reason too. ~~ .
~s. 2sa -ml cMT 2eo m ~ *~ ~ . cf)l-~ ~ q,t"akf m {Ii~
~ :a<t>0'5 ~ ffl ~ ~W~ tf \11~111'@ ~ I 3 ¾\~~~"4'\~ ~i1"
~ Find the number of beats produced in 1.~ seconds when two tuning forks
or frequency 256 Hz and 260Hz are vibrated together.
& o&-c:: ~~ctlon-D) ~ \'!'tlifl ll ~ {Short Answer type Questions)
16. ·~ut$)lt em TTftr ~ ~ tt4'<t>~ 0Nq;T ffi1 41~1 ~fttQ 1 3
Deduce all three equations of motion by graphical method. -
A=
-11. ttra~, f-2f- k am s=
-7 + f-21< ~~cm cffl11T wa cG!fttq 1 3
. • Find .the angle between the vectors A= 8
f- 2j _ k and = -7 + 1- 21<
_18. ~-&I~ TTP ~G1 ~ 1Jfct q;r a)tfxl ~ ~;~ ~ Pima 6 I 3
Show that Newton's third law of motion If contained in the second law.
~19. ~•tmut ~ ~ <5T ~ <fR ~ ~ .m~~tibll~<b ~ *
_ State work-kinetic energy theorem and prove it analyticall}'.
~ <JR I 3

.20. 20 ~MIUl'i ~~'111 qif ~ o'm -m am
3m ~ ~ : 100 ~~lt9i/ffW '$f
·'" cf>'to\){I 1q@ ~ ~ <f>x 'ffl ~ 1-m ~ ~.~1:0.25 ~ t' I mc6" ~ ~ ~
•lfi)Gt ~ ~ t°.? ~ <f>T arcA alar ct>~ cffiufltt ~ <PT qR11101 ~ t' ?3
A solid cylinder of mass 20 Kg rotates abou\ its axis with angular speed 100
rad s-1. The radius· of the cylinder is 0.25m. What is the kinetic energy
associated with the rotation of the cylinder? What is the magnitude of angu~
lar momentum of the cylinder about its asii. ~~ __811.l4Vor
~~~"fl~ ct>~ ~~~ fcRtJT (g) li qRqd1 ct~ &iGt<b ~ q;x) I
Derive.aA expression for the variation of gravitational acceleration (g) with
the height from the surface of the Earth. •
21. iN4)~ cf;~ cffl ft:i~Q ~ ~ cGf ff6lltdl ~ ~ d tti11<f>-<01 ctl ~l~d c(,)R,i~ i 3
Write Bernoulli's theorem and establish the related equation with the help
of the diagram.
22. ~ ~Mki-<Ui ~ t'? ~--MMkNOJ ~ Fclfilni d~cffl ~ '3~15~01 tt2a ff'iSil&~ 13
Wh;itw-~l~;nooesofheatbansfer~~~-,
ffltii, ..,.,,,.,__-+_f~t
<NY1 ~~~I~
<l>l~l'l ~41 ~fl~ A<blll • 1 ct;
~v1 ~V2 3tl~d1~~:~elxf~~~~ . ~ctNfq,ll@q;wf
,,, Name the thermodynamic process in wt11ch the temperature of the
system is kept constant. Derive an expression to find the work~done by
the gas in increasing the volume from~~o ~ for the same process.
23. ~ q;VT 2 ,t)cfiG ~ 311qdq,l{,t ~ 5 ~llil'i ~ ffleJ ~ 3114d 1'ffcr
Ple:q,Ra c1>'!a1 t I a101.:t, cf>U- ........,:...,. 3
(cf>) ~ ·(~} ~ {11}~ ~ ~ ~ ~ 1/3 ~ct)~ ~ iflG (i:1'(01
A particle executes S.H~M. with a time period of 2 second and am.
( 3,.

\
__

plltude 6 cm. Find- (a) displacement (~~ velocity
(c) acceleration after 1/3 s starting from the me~n pos1t.Ion. . ~epf(for
<WI-~ cm-~ c6)R;i~ I~~·~ 5J? ~ 3lcR <fR I
Q~cf> llRtlff ~ G~l5~01 ,fr~~,:- \~
Define wave-motion. Distinguish between transv~rse a{ld longitudinal wave
motions. Also give examples of each motion. ~\,&1u.Y bQ\'\~ •
&06-~' {Sectlon-E) cfttf "eti~4 1ft.f (Long Answer Type Questions)
24. ~ ~ ~ "$ !!~«flq ~ it ~RtGl "fl 0° q;)ur tR µ ~~$PT uildl ~ I ~
<f>1 \3-§,Q•Pl>lci1 tl2tT i3'(1cpf ~GI q,cj,ff ~\J"c(>)F,!iq ~ f e l ~ct: ~ m
q;)on $ ~ ~RiGi 4~1tt'~'il9i ~ t' I ifrJ~ ~ ~r;,r ~ 1.\H ·Jt!t~ 4 1

A projectile isJhrown with verocity 'µ' in the Earth's gravitational field at an
angle 8° to the horizontal. •Find the time of flight of the projectile and its
.. ·horizontal range. Show that there are two angles of projection of projectile
for which the horizontal range is the same. ___ 31f!lc1T/or
fcbffl '11ut'i -q ~ctr~ 'v','~ c t r ~ 'E' -am ~9itq 'd' lR ~
i.l>xa'l ~ I fc14'll M ~ ~ -q ~ ~ ~ "q>T ~ ~ ~('ti q I
The speed 'v' of sound in a medium depends on the elasticity 'E' and
density 'd' of the medium. Establish the formula for the speed of sound in
a medium using the dimensional method.
25. ~ 311qcl ~ ~ ~ ~ ~ ~~c,t91 a1RtG1 ~ , ~ ~ ~ ~
~~ BQGtcf> ~~I ftrca c61~~ fcl> ~ ctfr ~ ~ G)c,t91 $r 3ilqcff
~ G~c,t91 ~ ~llll'i <6 q1f <6 31jw'11j41al ~ ~ i 4
. Obtain expressions for the oscillatory kinetic energy, potential energy and
totai energy of a body performing simple harmonic motion. Prove that the
. total energy of the body is directly proportional of the frequency of oscilla- .
• tion and the;:are of the am~~ude of oscillation. 811!1<Wor .
--~-A--=a~f~ ~ ~r
a11q~ll,,, ~ ~ ftrca ~Ritq•-fq;cf;fi ~~""if~,
~ fc1f411 ~ 1ft ~4>1x ctr tic-tlcfl \itqn{ ~~I
What are harmonics ? Giving necessary diagrams, prove that both even
\
and odd harmonics are produced in a stretched string.
\ 26. ~ «!ll : GT~ A 3fR 8$ ~ MRl~c,t-~cbRt !114> ~ -q ~~~I
j -~ !I lq;'f cm- ~ tr ~'11.:tl '11~4>'! ~ill ~ ~ I ' ~
I Case Study: The stress-strain graphs for two materialsAand B qre shown
I
1 is the figure the graphs are drawn to the same scale. •
I

l

\ A I1 B'

0 - -Strain - - 0 - Straln ..
(a) ~ q~1ef CpT _WT~ y;¼<1> ~ t 1 • ,,.. 1
Which matenal~~~~ater.YounQ's mqdulus? •
(b) §Q> cff~ Plits:i 'q)1' . qR17 State Hooke's law • _ 1
(c) -eyffi A 3fR B ~s)tfGM~tl 'G1cl>)'~ 1:2 ~-~11~• &lift 2:1 ~3ij41ci
lf ~I~~ tlS-111 iR1 ~ ~ "Gilffi ~ fil '31$1 - 'lr~ cf>T 3ij41d ~ mrrf ?2
Two wires A and Bare of the same. material. Their lengths are in the ratio
,. 1:2 and the diameters in the ratio 2:1. If the~ are pulleo,by the same
force, what will be the ratio ·of thetr increase In lengths ? \: S
(4) ♦♦♦♦♦♦

◄

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