ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

In transverse waves, the individual particles of the medium move:

Question # 2

Example of vibratory motion is

Question # 3

If the mass of the simple pendulum becomes double, its time period

Question # 4

The number of vibrating body at any instant from its equilibrium position is called

Question # 5

The frequency of free vibrations is known as

Question # 6

Through which character we can distinguish the light waves from sound waves

Question # 7

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 8

The force which opposes the applied force producing the displacement in the spring is called

Question # 9

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Question # 10

The time required to complete on vibration is called

Question # 11

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 12

Which one of the following could be the frequency of ultraviolet radiation?

Question # 13

The speed of sound in a medium depends on

Question # 14

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 15

For a body executing S. H. M, its

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Sr. # Question Answer
1 SI unit of wave length is:

A. Kilometer

B. Metre

C.Centimetre

D. Hertz

2 Smaller the damping, the resonance will be

A. more flat

B. more sharp

C.both of them

D. none of them

3 What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

A. 1 MHz

B. 10 Hz

C.1 GHz

D. 100000 Hz

4 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

A. kg

B. kg-meter

C.kg/meter

D. Meter/kg

5 Which one of the following is an example of resonance

A. swing

B. tuning a radio

C.microwave oven

D. all of them

6 Energy is not carried by

A. Transverse progressive waves

B. Longitudinal vibration

C.Stationary waves

D. Electromagnetic

7 With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

A. Energy, momentum and mass

B. Energy

C.Energy and mass

D. Energy and linear momentum

8 Example of progressive wave is

A. transverse waves

B. longitudinal waves

C.both of them

D. none of them

9 The portion of the water above its mean level forms a:

A. Crest

B. Trough

C.Both A and B

D. None of these

10 For a body executing S. H. M, its

A. momentum remains constant

B. potential energy remains constant

C.kinetic energy remains constant

D. total energy remains constant

11 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

A. Interference

B. Diffraction

C.Polarization

D. Refraction

12 Fluids can transmit:

A. Transverse wave

B. Compressional wave

C.Both of them

D. None of them

13 Two sources of sound are said to be coherent if

A. The produce sounds of equal intensity

B. They produce sounds of equal frequency

C.They produce sound waves vibrating with the same phase

D. They produce sound waves with zero or constant phase difference all instant of time

14 One complete round trip of the body about its mean position is called

A. displacement

B. vibration

C.a complete motion

D. an acceleration

15 A second's pendulum is a pendulum whose time period is

A. 1 second

B. 2 seconds

C.3 seconds

D. 4 seconds

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