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

The restoring force always directed towards the

Question # 2

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

Question # 3

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

Question # 4

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 5

Example of progressive wave is

Question # 6

Fluids can transmit:

Question # 7

Which of the following is not mechanical wave?

Question # 8

The example of mechanical wave is

Question # 9

The time required to complete on vibration is called

Question # 10

A swing has

Question # 11

transverse wave motion is possible in:

Question # 12

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 13

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 14

If the time period a simple pendulum is 2 s, its frequency would be

Question # 15

If the length of second pendulum becomes four times then its time period will become

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In case of mechanical waves, we study the motion of
A. a single particle
B. collection of particle
C. any one of them
D. none of them
2 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these
3 If the length of a simple pendulum is 0.25 m its time period would be
A. 1.0 s
B. 2.0 s
C. 3.0 s
D. 4.0 s
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 The resonance will be sharp, if the amplitude decreases rapidly at a frequency
A. equal to the resonant frequency
B. slight different from the resonant frequency
C. greatly different from the resonant frequency
D. any one of them
6 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
7 A physical system under going forced vibrations is known as
A. Simple harmonic oscillator
B. Compound harmonic oscillator
C. Physical harmonic oscillator
D. driven harmonic oscillator
8 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
9 Shock absorber of the car is an example of
A. resonance
B. forced oscillations
C. interference
D. damped oscillations
10 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period

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