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 compressional wave,the layer of medium having reduced pressure is called:

Question # 2

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 3

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 4

The waves produced in a microwave oven have wavelength.

Question # 5

In the same medium, velocity of the wave:

Question # 6

SI unit of frequency is

Question # 7

transverse wave motion is possible in:

Question # 8

Si units of time period is

Question # 9

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

Question # 10

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

Question # 11

The wave motion set up in any medium depends upon:

Question # 12

A traveling wave has a shape of:

Question # 13

Shock absorber of the car is an example of

Question # 14

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

Question # 15

The instantaneous velocity of a body moving along a circle is directed

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When two waves with same frequency and constant phase difference phase difference interfere
A. There is a gain of energy
B. There is a loss of energy
C. The energy is redistributed and the distribution changes with time
D. The energy is redistributed and the distribution remains constant with time
2 Longitudinal waves are also called:
A. Congressional waves
B. Transverse waves
C. Radio waves
D. None of them
3 Time period of a simple pendulum depends upon the
A. length of the pendulum
B. acceleration due to gravity
C. none of them
D. both of them
4 In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is
A. Same
B. 2 times
C. 4 times
D. 8 times
5 If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:
A. Stationary waves
B. Transverse waves
C. Both of these
D. None of these
6 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
7 An object undergoes S.H.M has maximum speed when its displacement from the mean position is
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
8 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
9 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period
10 For production of beats the two sources must have
A. Different frequencies and same amplitude
B. Different frequencies
C. Different frequencies, same amplitude and same phase
D. Different frequencies and same phase

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