First Year Physics Chapter 11 Online MCQ Test for 1st Year Physics Chapter 11 (Optical Instruments)


This online test contains MCQs about following topics:

Kinetic Theory of Gasses - Internal Energy - Work and Heat - First law of Thermodynamics - Molar Specific Heats of a Gas - Reversible and Irreversible processes - Heat Engine - Second law of Thermodynamics - Carnot Engine and Carnot's Theorem - Thermodynamic Scale of Temperature - Petrol Engine - Entropy - Envirnmental Crisis as Entropy Crisis

FSC Part 1 Physics Ch. 11 Test

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FSC Part 1 Physics Chapter Wise Test
(English Medium)

MCQ's Test For Chapter 11 "Physics Fsc Part 1 Chapter 11 Online Test"

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  • Total Questions17

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Physics Fsc Part 1 Chapter 11 Online Test

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Question # 1

If an observeris moving in the same direction as a sound wave, the velocity of the wave seems to be 

Question # 2

Which one of the following physical quantities is indpednent of relativistic speed.

Question # 3

If  a space craft of rest legnth 'lo' is movng with a speed equal to speed of light, then its relativstic legnth l , will be 

Question # 4

The energy  'E' eqivalent to mass given by 

Question # 5

The mass of an object will be doubled at the speed.

Question # 6

Relativistic mechanics yields results different from classical mechanics for objects moving with.

Question # 7

it the rest mass of a particle mo increased to m due to its high speed then its kinetic energy is.

Question # 8

The length of rod at rest as measurd by an observer moving parallel to it with relativistic speed is given by

Question # 9

Relativistic velocity is of the order of.

Question # 10

The speed of beam light of a car while moving with high speed as compared to its rest positionis

Question # 11

If a material object moves with the speed of light 'c' its mass becomes 

Question # 12

A photon is particle of light. What is its mass when it moves with 0.9 C?

Question # 13

A rod at rest appears to an observer just a mere point when he moves across it as speed.

Question # 14

The theory of relativity was proposed in 

Question # 15

A no intertial frame of reference.

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11th Class Physics Chapter 11 Test

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Sr.# Question Answer
1

If an observeris moving in the same direction as a sound wave, the velocity of the wave seems to be 
A.

Less

B.

More

C.

Constant

D.

Sum of the two velocities
2

Which one of the following physical quantities is indpednent of relativistic speed.
A.

Charge

B.

Length

C.

Mass

D.

Time
3

If  a space craft of rest legnth 'lo' is movng with a speed equal to speed of light, then its relativstic legnth l , will be 
A.

l = lo

B.

l = lo/2

C.

l = 0

D.

All of these
4

The energy  'E' eqivalent to mass given by 
A.

Ec2

B.

E/C2

C.

E/C

D.

C2/E
5

The mass of an object will be doubled at the speed.
A.

2.6 x 10 7 m/s

B.

1.6 x 108 m/s

C.

2.6 x 108 m/s

D.

None of these
6

Relativistic mechanics yields results different from classical mechanics for objects moving with.
A.

Low velocity

B.

Velocity equal to that of sound waves

C.

Veloitiy geater than sound waves

D.

Velocity approaching that of lignt
7

it the rest mass of a particle mo increased to m due to its high speed then its kinetic energy is.
A.

( m - mo ) c2

B.

1/2 mv2

C.

1/2 mc2

D.

1/2 (m -mo0
8

The length of rod at rest as measurd by an observer moving parallel to it with relativistic speed is given by
A.

l = lo [1 - V2/C2]

B.

l = l0 1 -V2/C2

C.

l = lo / 1- V2C2

D.

l0 = l  1- V2/C2
9

Relativistic velocity is of the order of.
A.

1/15 of the velocity of light

B.

1/20 of the velocity of light

C.

1/10 of the velocity of light

D.

1/25 of the velocity of light
10

The speed of beam light of a car while moving with high speed as compared to its rest positionis
A.

Greater

B.

Less

C.

Same

D.

Zero
11

If a material object moves with the speed of light 'c' its mass becomes 
A.

Equal to its rest mass

B.

Infinite

C.

Four times of its rst mass

D.

Double of its rest mass
12

A photon is particle of light. What is its mass when it moves with 0.9 C?
A.

9.1 x 10-31 kg

B.

1.67 x 10-19  kg

C.

1.67 x 10-27 kg

D.

Zeri
13

A rod at rest appears to an observer just a mere point when he moves across it as speed.
A.

Equal to the speed of light

B.

Double the speed of light

C.

Three-fourth the speed of light

D.

None of the above
14

The theory of relativity was proposed in 
A.

1920

B.

1905

C.

1915

D.

1895
15

A no intertial frame of reference.
A.

Moves with some acceleration 

B.

Is always rest on earth

C.

Moves with uniform velocity

D.

All of the above

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