ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 2

A weakly damped system has fairly

Question # 3

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

Question # 4

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 5

To hear a clear echo, the reflecting surface must be at a minimum distance of

Question # 6

The principle of superposition states that

Question # 7

Shock absorber of the car is an example of

Question # 8

The waves produced in a microwave oven have frequency

Question # 9

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

Question # 10

A simple pendulum consists of a

Question # 11

Which waves are used in sonography?

Question # 12

Si units of time period is

Question # 13

The velocity of sound is greatest in

Question # 14

Angular frequency 'w' is basically a characteristics of

Question # 15

If a wave can be polarized, it must be

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
2 Shock absorber of the car is an example of
A. resonance
B. forced oscillations
C. interference
D. damped oscillations
3 The restoring force always directed towards the
A. extreme position
B. mean position
C. both of them
D. none of them
4 Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec
5 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A. Interference
B. Diffraction
C. Polarization
D. Refraction
6 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
7 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period
8 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
9 In a resonance situation the amplitude of the motion may become extra ordinarily large, if
A. the driving force is large
B. the driving force is zero
C. the driving force may be feeble
D. all of them
10 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m

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