Karnataka 1st PUC Preparatory Exam Question Paper 2026 Physics

FOR KARNATAKA 1ST PUC PREPARATORY EXAM EXAM PREPARATION

Karnataka 1st PUC
Preparatory Exam
2026
Question Paper ·
Physics
EXAM YEAR TYPE

Karnataka 1st PUC Preparatory Exam 2026 Question Paper
SUBJECT

Physics

Notes · Sample Papers · Previous Year Papers · Mock Tests

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GOVERNMENT OF KARNATAKA
DEPARTMENT OF SCHOOL EDUCATION ( PRE UNIVERsITY )
PREPARATORY EXAMINATION
I P.U.C: P H Y S I C S (33) : 2 0 2 5 - 2 6
Time : 3 hours Max. Marks : 70

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Instructions:
1. Al l par t s f r o m A t o D are. compul sory. s e
s ei ons,m f i r st wri t t en-answer wi l l be consi dered f or a w a r d i n g marks. g l a
2. F o r Part - A quest
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3. A n s w e r s w i tlh o u t rel evant d i a g r a m / f i g u r e / ci rcui t w h e r e v e r n e c e s s a r y wi l l n o t c a r r y a n y m a r k s .
g a
4. Di rect aa n s w e r s t o n u m e r i c a l p r o b l e m s wi t hout rel evant f o r m u l a a n d det ai l ed sol ut i ons wi l l not carry
anyy marks.

PART-A

I Pi ck t he correct opt i on a m o n g t he f our gi ven opt i ons f or al l of t he f ol l owi ng quest i ons: 15 x 1 = 15
1. T h e SI uni t of pl ane angl e i s
(A) degree (B) p e r d e g r e e (C) radian (D) steradian

o m
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2. A rect i l i near m o t i o n is a m o t i o n
(B) i n a pl ane .
(A) a l o n g a ci r cul ar pat h
( D ) a l o n gse
m
(C) al onga par abol i c pat h
3. A vect or i s mul t i pl i ed wi t h a negat i ve i nt eger . g
a a st rai ght l i ne
T h el di r ect i on of t he r esul t ant vect or i s
( A ) s a m e as t hat o f t h e i ni t i al v e c t o r
a(B) o p p o s i t e t o t hat o f t he i ni t i al v e c t o r
(C) perpendi cul ar t o t he i ni t i al vect or ( D ) a l o n g arbi t rary di rect i on

4. A l arge f orce act i ng f or a short t i m e t o p r o d u c e a f i ni t e c h a n g e i n m o m e n t u m i s cal l ed
( A ) a n i m p u l s i v e f orce ( B ) a f ri ct i onal force
(C) a viscous f orce ( D ) a n o r m a l f orce
5. If t w o vectors A a n d B are act i ng at a n a n g l e o f 0, t he scal ar p r o d u c t b e t w e e n t h e m i s wri t t en as
m
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(A) ˆ x B = A B cos 0 ( B) ˆ x B = A B si n 9
m
c. 6.o T h e a n a l o g u e o f m a s s i n rot at i onal m o t i o n is ( D ) ˜ - B = A B si n 0
(C) ¢- B = A B cos e
s e m
m la
se ( A ) m o m e n t o f i nert i a ( B ) angul ar m a s s
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(C) momentum ( D ) centre of mass

7. Accel erat i on d u e t o gravi t y ’ g’
( A ) decreases wi t h hei ght ( B ) i ncreases with height
( C ) i ncrecases with depth (D) i s i ndependent o f hei ght

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8. P o i s s o n ’ s rat i o i s t h e rat i o of

(A) l ongi t udi nal st r ess t o l ongi t udi nal st r ai n
(B) v o l u m e st ress t o v o l u m e st rai n

(C) l at er al st r ai n t o l ongi t udi nal st r ai n
(D) l ongi t udi nal st r ai n t o l at er al st r ai n
9. T h e resi st ance t o t he rel at i ve m o t i o n b e t w e e n l ayers o f a l i qui d i s cal l ed
( A ) f ri ct i on (B) vi scosi t y
(C) surface tension (D) cohesion
10. T h e c o l u m n - l i s t he l i st o f m o d e s o f heat t ransf er a n d t he c o l u m n - I I , t he l i st o f t ransport media.
I dent i f y t he correct match.

Column-I Column-II

() c o n d u c t i o n ( a) f l ui d
( i i ) convect i on ( b) n o m e d i u m
(iii) radiation (c) s o l i d

( A ) () - ( a) , ( i ) - ( b) , ( i i i ) -(c) ( B) ( ( ) - ( 6) , ( i ) - ( a) , ( i ) - ( c)
(C) ( ) -(c), ( i i ) - ( a) , ( i i ) - ( b) ( D ) () - ( b) , ( i i ) - ( c) , ( i i i ) - ( a)
11. Fi r st l aw of t hermodynami cs i s equi val ent to
( A ) l a w o f conservat i on of charge (B) l a w o f c o n s e r v a t i o n o f l i ncar momentum
(C) l a w o f c o n s e r v a t i o n of energy (D) law of conservation of angular momentum
12. At const ant t emperat ure, pressure o f a gi ven m a s s o f a gas vari es i nversel y w i t h its v o l u m e . This
statement is k n o w n a s

(A) Boyle’s law (B) Charles’ law
(C) Kelvin’s law (D) Gay Lussac’s law
13. T h e ci rcul ar motion of a part i cl e with a constant s p e e d is
( A ) per i odi c and osci l l at or y (B) peri odi c but not osci l l at or y
(C) osci l l at or y but not peri odi c (D) nei t her peri odi c nor osci l l at or y
14. T h e m i n i m u m di st ance between t w o poi nt s o n a w a v e h a v i n g t he s a m e p h a s e i s cal l ed t he
(A) wave number (B) w a v e l e n g t h (C) w a v e s p e e d (D) wavcfront
15. F o l l o w i n g are t he t w o st at ement s a b o u t t he vi brat i ons of ai r c o l u m n .
St at ement -I : W h e n a n ai r c o l u m n w i t h o n e e n d cl osed vi brat es, n o d e i s f o r m e d at t he c l o s e d
end.
St at ement - I I : A t t he cl osed end, pr essur e changes ar e t he l ar gest , whi l e t he
di spl acement i s zer o.
( A ) b o t h I a n d I I are t rue a n d I I i s t he correct expl anat i on o f I .
(B) bot hl a n d I I are t r ue but I I i s not t he correct expl anat i on of I .
(C) I i s t r ue but I I i s f al se.
( D ) bot h I a n d I I ar e f al se.

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I I Fi l l i n t he bl anks by choosi ng appr opr i at e answer gi ven i n t he br acket f or al l t he f ol l owi ng
questions. 5 x 1 = 05
(t hermomet er, el ast i c, vel oci t y, mean, pr essur c, cal or i met er )
16. I n pur e t r ansl at i onal mot i on at any i nst ant of t i me, al l par t i cl es of t he body have t he same
17. A d e v i c e u s e d t o m e a s u r e heat i s

19. A c c o r d i n g t o ki net i c t heory,om
18. I n an i sobari c process, t he quant i t y t hat r e m a i n s const ant is

. c al l col l i si ons b e t w e e n mol ecul es of an i deal gas ar e
e m
20. I n si mpl e h a r m o n i c m
e mot i on, t he r est or i ng f or ce i s al ways di rect ed t owards
l as
s
position.

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I I I A n s w e r aa n y F I V E of t he f ol l owi ng quest i ons.
PART-B
5x 2 = 10

21. Wri t e any t wo appl i cat i ons of di mensi onal anal ysi s.
22. W h a t i s m e a n t b y f r ee f al l ? W h a t i s t he di rect i on of accel erat i on i n f r ee f al l ?
23. Wri t e t he expressi on f or cent r i pet al accel erat i on and expl ai n t he t er ms.
24. Wri t e a n y t w o m e t h o d s o f reduci ng f r i ct i on.
25. St at e t he t w o condi t i ons u n d e r w h i c h a f orce does n o wor k.
26. A st r uct ur al st eel rod has an arca o f cross sect i on
A 1 0 0 k N f orce st ret ches i t al ong i t s l engt h. F i n d t he st r ess o nco
m o f 3. 14 x 1 0 - m † a n d a l engt h o f 1. 0 m.

e rm
of energy. G i v e t he n u m be
. t he r od.
27. St at e t he l aw of cqui par t i t i on
l a s of degrees of f r e e d o m of a m o n o a t o m i c gas

28. Wri t e any t w o di f f er ences bet ween l ongi t udi nalag and t r ansver se waves.
molecule.

PART-C

I V A n s w e r a n y F I V E of t he f ol l owi ng quest i ons. 5x3 = 15

29. Deri ve t he ki nemat i c equat i on v = Vo + at usi ng v t gr aph, where t he symbol s have t hei r usual
meani ngs.
30. D e f i n e equal vect ors, uni t vect or a n d nul l vect or.
31. Usi ng Newt on’ s second l aw of mot i on, der i ve F = m a , where t he symbol s have t hei r usual
m
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meani ngs.
e m
s
32. A w o m a n draws a bucket f ul of wat er wei ghi ng 1 0 k g f rom a wel l i n whi ch wat er l evel i s & m bel ow
m n 9 . 8 s. F i n d h e r a v e r a g e p o w e r . T a k e g = 9 . 8 m s a
se 33. iWhat i s meant by cqui l i br i ur n of a r i gi d body? Wr i t e t he condi t i ons f or t he equial i g
l 90w
br i um of a r i gi d
body.
34. St at e t he t hr ee Kepl er’ s l aws of pl anet ar y mot i on.
35. What i s meant by st r caml i ne f l ow and t ur bul ent f l ow? Wr i t e t he cquat i on of cont i nui t y f or a f l ui d f l ow.
36. Show t hat t he vol ume coef f i ci ent , ay = f o r i deal gas, wher e T i s t he absol ut e t emper at ur e o f t he
i deal gas.

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PART-D
V A n s w e r a n y T H R E E o f t h e f ol l owi ng 3 x 5 = 15
quest i ons.
37. 1l ust r at e t he conservat i on of mechani cal energy i n casc of a body dropped f rom a hei ght " H .
38. (a) D e f i n e t o r q u e and angular momentum. (2)
( b ) D e r i v e t he rel at i on b e t w e e n t orgque a n d angul ar momentum. (3)
59. Deri ve an expressi on f or t he escape specd f rom t he surf ace of t he car t h.
40. ( a) St at e a n d expl ai n Z e r o t h l a w of t h e r m o d y n a m i c s . (2)
( b) Wr i t e t he t hr ee di f f er ences bet ween i sot her mal and adi abat i c pr ocesses. ( 3)
41. W i t h a schemat i c di agram s h o w i n g t he c o m p o n e n t s of rest ori ng f or ce, deri ve an expressi on f or t he
t i me peri od of an osci l l at i ng si mpl e pendul um.

VI A n s w e r a n y T W Oof t he f o l l o w i n g quest i ons. 2 x 5 = 10
42. A bal l i s proj ect ed w i t h a vel oci t y of 50 m s ’ i n a di rect i on m a k i n g an angl e o f 3 0 w i t h t he
hor i zont al . Fi nd t he m a x i m u m hei ght and t i me of f l i ght of t he bal l . For w h a t angl e of pr oj ect i on, t he
range will be m a x i m u m ?
43. A m a n p u s h e s a car o f m a s s 2 0 0 0 k g at rest a l o n g a hori zont al road with a steady f orce o f 3 0 0 N.
The resistance o f t h e r o a d is 0 . 0 5 N / k g . F i n d t he v e l o c i t y o f t h e car the end of 20 s and distance
t ravel l ed b y t he car .
44. T h e base o f a c o p p e r boi l er i s 2 c m t hi ck a n d has an area o f 0. 01 m ’ . T h e st eady di f f erence in
t emperat ure b e t w e e n i t s f aces i s 5 K. Cal cul at e t he m a s s of w a t e r t hat evaporat es i n 1 hour. Gi ven:
t hermal conduct i vi t y of copper = 3 8 5 W m K - and l at ent heat of st eam = 2. 2 x 106 Jkg-1,
45. A st ri ng 1 m l ong i s u n d e r a t ensi on of 4 4 0 N . I f t he f u n d a m e n t a l f requency i s 1 0 0 H z , f i nd t he
m a s s p e r uni t l e n g t h o f t he st ri ng. W h a t i s t he m a s s o f t he st ri ng?

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