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

Which one is not produced by sound waves in air?

Question # 2

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

Question # 3

The square of 0.4 is:

Question # 4

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

Question # 5

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 6

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 # 7

If the length of a simple pendulum is 0.25 m its time period would be

Question # 8

The characteristic of a body executing S.H.M is that its acceleration is

Question # 9

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

Question # 10

Transverse waves can be set up:

Question # 11

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 12

The process in which energy is dissipated from the oscillating system is known as

Question # 13

Which of the following changes at an antinode in a stationary wave?

Question # 14

When sound waves travel from air to water which of these remains constant?

Question # 15

A weakly damped system has fairly

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:
A. Rope
B. Coil of spring
C. Water
D. All of them
2 Fidelity refers to
A. Reproduction of original sound
B. Reproduction of original image
C. Reproduction of music
D. Reproduction of a CD from original copy
3 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob
4 Which waves are used in sonography?
A. Microwaves
B. Infra red waved
C. Sound waves
D. Ultrasonic waves
5 Which one of the following wave motions is transverse:
A. Wave motion produced in water when a piece of stone is thrown into it
B. Pulling of weight hanging vertically with a spiral spring
C. Both of these
D. None of these
6 Which of the following changes at an antinode in a stationary wave?
A. Density only
B. Pressure only
C. Both pressure and density
D. Neither pressure nor density
7 The process in which energy is dissipated from the oscillating system is known as
A. resonance
B. interference
C. diffraction
D. damping
8 Such oscillations in which the amplitude decreases steadily with time, are called
A. resonance
B. force oscillations
C. large oscillations
D. damped oscillations
9 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
10 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

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