TN 11th Question Paper 2026 Physics

FOR TN 11TH EXAM PREPARATION

TN 11th 2026
Question Paper ·
Physics
EXAM YEAR TYPE SUBJECT

TN 11th 2026 Question Paper Physics

Notes · Sample Papers · Previous Year Papers · Mock Tests

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No. of Printed Pages : 8
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!9117IstYearPhysics! £vÄ Gs
Register Number

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PART - III
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Põ» AÍÄ : 3.00 ©o ÷|µ® ] [ ö©õzu ©v¨ö£sPÒ : 70

Time Allowed : 3.00 Hours ] [ Maximum Marks : 70

AÔÄøµPÒ : (1) AøÚzx ÂÚõUPЮ \›¯õP¨ £vÁõQ EÒÍuõ GߣuøÚa
\›£õºzxU öPõÒÍÄ®. Aa_¨£vÂÀ SøÓ°¸¨¤ß, AøÓU
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AiU÷PõikÁuØS® £¯ß£kzu ÷Ásk®. £h[PÒ ÁøµÁuØS
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Instructions : (1) Check the question paper for fairness of printing. If there is any lack of fairness,

inform the Hall Supervisor immediately.

(2) Use Blue or Black ink to write and underline and pencil to draw diagrams.

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s eSÔ¨¦ (i) AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®.
g la 15x1=15

g la (ii) a ªPÄ® Hئøh¯
öPõkUP¨£mkÒÍ |õßS ©õØÖ ÂøhPÎÀ
a Âøhø¯z ÷uº¢öukzxU SÔ±mkhß Âøh°øÚ²® ÷\ºzx
GÊuÄ®.
Note : (i) Answer all the questions.

(ii) Choose the most appropriate answer from the given four alternatives and write

the option code and the corresponding answer.

[ v¸¨¦P / Turn over

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1. ^µõÚ Ahºzv EÒÍ usk JßÔøÚ öÁ¨£¨£kzx®÷£õx, Azusiß
¤ßÁ¸® AÍÄPÎÀ Gx AvP›US® ?
(A) {øÓ (B) {ø»©z v¸¨¦zvÓß
(C) Gøh (D) {øÓ ø©¯®
When a uniform rod is heated, which of the following quantities of the rod will increase ?

(a) Mass (b) Moment of inertia

(c) Weight (d) Centre of mass

2. SÖUPø» JßÖ GßÓ FhPzv¼¸¢x GßÓ FhPzvØSa ö\ÀQÓx.
A B

A FhPzvÀ SÖUPø»°ß vø\÷ÁP® Aø»}Í® FhPzvÀ 500 ms
−1
, 5 m. B

Auß vø\÷ÁP® GÛÀ, &À AvºöÁs ©ØÖ® Aø»}Í®, •øÓ÷¯ :
600 ms
−1
B

(A) ©ØÖ®
120 Hz (B)5 m ©ØÖ® 100 Hz 5 m

(C) ©ØÖ®
120 Hz (D)6 m ©ØÖ® 100 Hz 6 m

A transverse wave moves from medium A to a medium B. In medium A, the velocity of the
−1
transverse wave is 500 ms and the wavelength is 5 m. The frequency and the wavelength
−1
of the wave in medium B, when its velocity is 600 ms , are respectively :

(a) 120 Hz and 5 m (b) 100 Hz and 5 m

(c) 120 Hz and 6 m (d) 100 Hz and 6 m

3. ¦Â°ß {øÓ²®, Bµ•® C¸©h[PõÚõÀ Dº¨¤ß •kUP® GßÚÁõS® ? (g)

(A) g (B) (C) (D)
2g g/2 4g

If the mass and radius of the Earth are both doubled, then the acceleration due to gravity (g)

becomes :

(a) g (b) 2g (c) g/2 (d) 4g

4. π&ß ©v¨¦ 3.14 GÛÀ, &ß ©v¨¦ :π
2

(A) 9.860 (B) (C)9.9 9.86 (D) 9.8596

2
If π=3.14, then the value of π is :

(a) 9.860 (b) 9.9 (c) 9.86 (d) 9.8596

5. QøhzuÍzvÀ E¸Ð® \UPµ® JßÔß ø©¯zvß ÷ÁP® \UPµzvß £Sv°À v .
0

ø©¯¨ ¦ÒÎUS Cøn¯õÚ E¯µzvÀ EÒÍ ¦ÒÎ, C¯UPzvß ÷£õx
ö£ØÔ¸US® ÷ÁP® :
(A) 2v
0
(B) 2 v
0
(C) _È (D) v
0

The speed of the centre of a wheel rolling on a horizontal surface is v . A point on the rim in
0

level with the centre will be moving at a speed of :

(a) 2v (b) 2 v (c) zero (d) v
0 0 0

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6. |À¼¯À¦ Áõ²a \©ß£õmiߣi,
µR
(A) PV=µRT (B) PV =
r
©õÔ¼ (C) r
P V=RT (D) PV =
T

According to ideal gas equation :

µR
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r r PV =
(a) PV=µRT (b) PV =Constant (c) P V=RT (d)

m T

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J¸ •Ê vs©¨ ö£õ¸Îß ¯[ SnP® :
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ag
(A) (B) _È (C) •i¼ (D)
a
0.5 1

g l
The Young’s Modulus for a perfect rigid body is :

(a) 0.5
a (b) zero (c) infinity (d) 1

8. J¸ ÷PõÍzvß Bµzøu AÍÂku¼À ¤øÇ 2% GÛÀ, Auß PÚ AÍøÁU
PnUQku¼ß ¤øǯõÚx :
(A) 4% (B) (C) 8% 6% (D) 2%

If the error in the measurement of radius is 2%, then the error in the determination of volume

of a sphere will be :

(a) 4% (b) 8% (c) 6% (d) 2%

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9. Cµsk öÁUhºPÎß ì÷P»º ö£¸UPÀ _È GÛÀ, AÁØÖUS Cøh÷¯²ÒÍ
÷Põn® :
e m
(A) 45 8 (B) (C) 08 (D)
las 1 8 08 90 8

(b) 08 ag
If the scalar product of two vectors is zero, then the angle between them is :

(a) 45 8 (c) 1 8 08 (d) 90 8

10. xPÒ JßÖ ©õÓõu vø\÷ÁPzxhß ÷|º Aa_US Cøn¯õÚ ÷|º÷Põmiß x -

ÁÈ÷¯ C¯[QU öPõsi¸UQÓx. Bvø¯¨ ö£õ¸zx, GsnÍÂÀ Auß ÷Põn
E¢u® :
(A) &I¨ ö£õ¸zx SøÓQÓx (B) _È
x

(C) ©õÓõux (D) &I¨ ö£õ¸zx AvP›UQÓx x

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A particle is moving with a constant velocity along a straight line parallel to positive x-axis.

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The magnitude of its angular momentum with respect to origin is :

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s e m (b) zero

em |À¼¯À¦ Áõ² JßÔß APBØÓÀ ©ØÖ® £¸©ß BQ¯øÁ a C¸ ©h[PõUP¨
(c) remaining constant (d) increasing with x

s g l
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a £mhõÀ, AÆÁõ²Âß AÊzu® GßÚÁõS® ?
(A) £õv¯õPU SøÓ²® (B) C¸ ©h[PõS®
(C) |õßS ©h[S AvP›US® (D) ©õÓõx
If the internal energy of an ideal gas U and volume V are doubled, then the pressure :

(a) halves (b) doubles

(c) increases four times (d) remains same

[ v¸¨¦P / Turn over

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12. ø©¯Â»US Âø\ G[S HØ£k® ?
(A) G¢uöÁõ¸ •kUP©øh²® SÔ¨£õ¯zv¾®
(B) {ø»©U SÔ¨£õ¯[PÎÀ ©mk®
(C) {ø»© ©ØÖ® {ø»©©ØÓ SÔ¨£õ¯[Pξ®
(D) _ÇÀ C¯UPU SÔ¨£õ¯[PÎÀ ©mk®
Centrifugal force appears to exist :

(a) in any accelerated frame

(b) only in inertial frames

(c) both in inertial and non-inertial frames

(d) only in rotating frames

13. xPöÍõßÖ ^µõÚ Ámh C¯UPzøu ÷©ØöPõÒQÓx GÛÀ, __________.

(A) Auß vø\÷ÁP® ©ØÖ® •kUP® ©õÔ¼
(B) Auß vø\÷ÁP® ©ØÖ® ÷ÁP® ©õÔ¼
(C) Auß ÷ÁP® ©ØÖ® •kUPzvß Gs©v¨¦ ©õÔ¼
(D) Auß •kUP® ©ØÖ® ÷ÁP® ©õÔ¼
If a particle executes uniform circular motion, then __________.

(a) its velocity and the acceleration are constant

(b) its velocity and the speed are constant

(c) its speed and the magnitude of acceleration are constant

(d) its acceleration and the speed are constant

14. ¤ßÁ¸ÁÚÁØÖÒ ^µØÓ Aø»Ä C¯UPzvØS GkzxUPõmk Gx ?
(A) ¦Âø¯a _ØÔÁ¸® \¢vµÛß C¯UP®
(B) ÷©P[PÎß C¯UP®
(C) öuõmi°ß Aø»Ä
(D) Á͸® ©ØÖ® ÷u²® \¢vµß
Which of the following is an example of non-periodic motion ?

(a) Moon revolving around Earth

(b) Motion of clouds

(c) Swing of a cradle

(d) Waxing and Waning of moon

15. J¸ ö£õ¸Îß ÷|ºU÷Põmk E¢u® 0.1% E¯º¢uõÀ, Auß C¯UP BØÓÀ E¯¸®
AÍÄ :
(A) 0.4% (B) 0.1% (C) 0.01% (D) 0.2%

If the linear momentum of the object is increased by 0.1% then the kinetic energy is increased

by :

(a) 0.4% (b) 0.1% (c) 0.01% (d) 0.2%

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 4 of 8

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£Sv – II / PART - II

SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõUPÐUS Âøh¯ÎUPÄ®. ÂÚõ Gs 24 &US
Pmhõ¯©õP Âøh¯ÎUPÄ®. 6x2=12

Note : Answer any six questions. Question No. 24 is compulsory.

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Dº¨¦ ußÛø» BØÓÀ – Áøµ¯ÖUPÄ®.
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Define gravitational potential.

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s em PnUQkÁuß ÂvPÒ H÷uÝ® CµsiøÚ GÊxP. gl
as
la a
17. •UQ¯ Gsq¸UPøÍU
ag
Write any two rules for determining significant figures.

18. Ch¨ö£¯ºa] C¯UPzvØS®, _ÇØ] C¯UPzvØS® Cøh°»õÚ ÷ÁÖ£õkPÒ
H÷uÝ® CµsiøÚ GÊxP.
Give any two differences between translational and rotational motions.

19. ¤öµÍÛ¯ß C¯UPzøu £õvUS® PõµoPøÍ GÊxP.
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Write the factors affecting Brownian Motion.

e m
s
−1
20. 1 Nm©ØÖ® _¸Ò ©õÔ¼PÒ öPõsh C¸ _¸ÒÂÀPÒ £UP Cøn¨¤À
2 Nm
−1

g la
CønUP¨£kÁuõPU P¸uÄ®. öuõS£¯ß _¸Ò ©õÔ¼ø¯U PnUQkP.
a
Consider two springs with spring constants 1 Nm

Calculate the effective spring constant.
−1
and 2 Nm
−1
connected in parallel.

21. •kUP® – Áøµ¯ÖUPÄ®.
Define acceleration.

22. Áõ² JßÔÀ J¼°ß vø\÷ÁPzøu £õvUS® PõµoPøÍ GÊxP.
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Write down the factors affecting velocity of sound in a gas.

om Âvø¯U TÖP.
c. ¯Ûß e m
e m
23.

l as
las State Wien’s law.

ag
ag 24. ÁøÍÄ Bµ® öPõsh Ámh ÁiÁa \õø»°À ö\À¾® Põº,
10 m 50 ms
−1

vø\÷ÁPzvÀ ÁøÍQÓx. AUPõ›ß EÒ÷Í A©º¢v¸US® {øÓ²øh¯ 60 kg

©Ûuº En¸® ø©¯Â»US Âø\ø¯U PõsP.
−1
A car takes a turn with velocity 50 ms on a circular road of radius of curvature 10 m.

Calculate the centrifugal force experienced by a person of mass 60 kg inside the car.

[ v¸¨¦P / Turn over

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6

£Sv – III / PART - III

SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõUPÐUS Âøh¯ÎUPÄ®. ÂÚõ Gs 33 &US
Pmhõ¯©õP Âøh¯ÎUPÄ®. 6x3=18

Note : Answer any six questions. Question No. 33 is compulsory.

25. CÊzxUPmh¨£mh P®¤°À HØ£k® SÖUPø»PÐUPõÚ ÂvPøÍU TÖP.
State the Laws of Transverse Vibrations in stretched strings.

26. ¤ßÁ¸® {PÌÄPÒ JÆöÁõßÔØS® Áøµ£h® JßÖ ÁøµP : PV

öÁ¨£{ø» ©õÓõ {PÌÄ,
(i) AÊzu® ©õÓõ {PÌÄ, ©ØÖ® £¸©ß ©õÓõ
(ii) (iii)

{PÌÄ
Draw one PV diagram each for (i) isothermal process, (ii) isobaric process and (iii) isochoric

process.

→ ∧ ∧ ∧
27. J¸ ÷PõÎß ÷Põn E¢u® GÛÀ, ÷PõÎß «x ö\¯À£k®
L =5t
2
i −6t j +3 k

v¸¨¦ Âø\ø¯U PnUQkP. v¸¨¦ Âø\¯õÚx ÷Põn E¢uzvß vø\°À
ö\¯À£k©õ ?
→ ∧ ∧ ∧
2
The angular momentum of a planet is given by L =5t i −6t j +3 k . Calculate the torque

experienced by the planet. Will the torque be in the same direction as that of the angular

momentum ?

28. BØÓÀ ©õØÖ® ©ØÖ® BØÓÀ ©õØÓõ Âø\PÐUS Cøh÷¯²ÒÍ ÷ÁÖ£õkPÒ
H÷uÝ® ‰ßÔøÚz u¸P.
Give any three differences between conservative and non-conservative forces.

29. J¸ Áõ²Âß ‰»UTÖ {øÓ (\µõ\› C¸©i‰») ÷ÁPzxhß GÆÁõÖ
r.m.s.

öuõhº¤À EÒÍx ? ¦Â°ß ÁΩsh»zvÀ Hß øímµáß Áõ² CÀø» ?
How is rms (root mean square) speed related to molar mass of the gas ? Why is there no

hydrogen in the Earth’s atmosphere ?

30. Á›a^º Kmh® ©ØÖ® _ÇØ] Kmh® – ÷ÁÖ£kzxP.
Distinguish between streamlined flow and turbulent flow.

31. {ø»©® GßÓõÀ GßÚ ? K´ÂÀ {ø»©®, C¯UPzvÀ {ø»©® ©ØÖ® C¯UPz
vø\°À {ø»©® CøÁ JÆöÁõßÔØS® J¸ GkzxUPõmk u¸P.
What is inertia ? Give one example each for inertia of rest, inertia of motion and inertia of

direction.

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 6 of 8

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32. \©{ø»°ß ÁøPPÒ H÷uÝ® ‰ßÔøÚ¨ £ØÔ SÔ¨¦ ÁøµP.
Write note on any three types of equilibrium.

33. E¯µzv¼¸¢x C¸®¦¨ £¢x ©ØÖ® CÓS CƵsk® J÷µ ÷|µzvÀ
20 m

ÂÊQßÓÚ.
m
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uøµø¯ AøhÁuØS AøÁ GkzxUöPõÒЮ ÷|µ® \©©õP C¸US©õ
(i)

m
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AÀ»x öÁÆ÷ÁÓõP C¸US©õ ?
m s e
a
uøµø¯ Aøh²®÷£õx C¸®¦¨ £¢vß vø\÷ÁPzøuU PnUQkP.
(ii)

s e l
a ag
(PõØÖz uøhø¯¨ ¦ÓUPoUPÄ®. GßP. g=10 ms
−2
)

g l
An iron ball and a feather are both falling at the same time from a height of 20 m.

(i)

(ii)
a
Will the time taken by them to reach the ground be same or different ?

Calculate the velocity of the iron ball when it reaches the ground.
−2
(Ignore air resistance. Take g=10 ms )

£Sv – IV / PART - IV

SÔ¨¦ : AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 5x5=25

Note : Answer all the questions.

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34. (A) (i) £›©õn¨ £S¨£õ´Âß £¯ß£õkPøÍz u¸P.
£›©õn¨ £S¨£õ´øÁ¨ £¯ß£kzv GßÓ \©ß£õmøh
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2
(ii) ν =2gh

\›¯õÚuõ GÚU PshÔP.
e m
AÀ»x
las
(B) (i) öP¨Í›ß ÂvPøÍU TÖP.
ag
(ii) ©ØÖ®
m =1 kg
1
BQ¯ ¦ÒÎ {øÓPÒ
m =2 kg
2
öuõø»ÂÀ EÒÍÚ. 10 m

AÁØÖUS Cøh÷¯¯õÚ PÁºÄ Âø\°ß Gs ©v¨ø£U PnUQkP.
(G=6.67×10 GßP)
−11
Nm
2
kg
−2

(a) (i) Give the applications of dimensional analysis.
2
(ii) Check the correctness of the equation ν =2gh using dimensional analysis.

OR

(b) (i) State Kepler’s laws.

(ii) Two point masses m =1 kg and m =2 kg are separated by a distance of 10 m.
m
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1 2

m Calculate the magnitude of force of attraction between them.

.co m
−11 2 −2
[Take G=6.67×10 Nm kg ]

s e
s em (A) öÁUhº Tku¼ß •U÷Põn Âvø¯ ÂÍUPÄ®. gla
35.

g la AÀ»x a
a (B) ì÷hõUì Âvø¯¨ £¯ß£kzv AvP £õS{ø» öPõsh vµÁzvÀ
C¯[S® ÷PõÍzvß •ØÖzvø\÷ÁPzvØPõÚ \©ß£õmøhz u¸ÂUPÄ®.
(a) Explain the Triangle Law of vector addition.

OR

(b) Derive the expression for the terminal velocity of a sphere moving in a high-viscous

fluid using Stokes force.

[ v¸¨¦P / Turn over

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36. (A) ¡¼ÚõÀ ¤ønUP¨£mkÒÍ PÚ¨ö£õ¸ÒPÎß ö\[Szx C¯UPzøu
ÂÍUSP.
AÀ»x
(B) |À¼¯À¦ Áõ² JßÔØPõÚ ÷©¯º öuõhºø£¨ ö£ÖP.
(a) Explain the motion of blocks connected by a string in vertical motion.

OR

(b) Derive Meyer’s relation for an ideal gas.

37. (A) J¸ £›©õn «m] ÷©õu¼À ö£õ¸ÒPÎß vø\÷ÁPzvØPõÚ
\©ß£õmiøÚz u¸Âzx, H÷uÝ® C¸ ÷|ºÄPøÍ GÊxP.
AÀ»x
(B) Aø»ÄPÎß £À÷ÁÖ ÁøPPøÍ ÂÍUSP.
(a) Arrive at an expression for the velocities of bodies in elastic collision in one dimension

and write any two cases.

OR

(b) Explain the different types of oscillations.

38. (A) Cøn¯a_z ÷uØÓzøuU TÔ, {¹¤UPÄ®.
AÀ»x
(B) ‰i¯ BºPß SÇõ´ JßÔÀ ÷©Ø_µ[PÒ HØ£kÁøu ÂÍUSP.
(a) State and prove the parallel axis theorem.

OR

(b) Explain how overtones are produced in a closed organ pipe.

- o O o -

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