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

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

Question # 2

A traveling wave has a shape of:

Question # 3

Smaller the damping, the resonance will be

Question # 4

The waves moving from a sitar to a listener in air are

Question # 5

Mechanical waves on the surface of a liquid are

Question # 6

The vibratory or oscillatory motion of a body is

Question # 7

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

Question # 8

The principle of superposition states that

Question # 9

The waves produced in a microwave oven have wavelength.

Question # 10

Which of the following is not mechanical wave?

Question # 11

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

Question # 12

Decibel is unit of

Question # 13

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 14

The speed of sound in a medium depends on

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In transverse waves, the individual particles of the medium move:
A. In circles
B. Perpendicular to the direction of level
C. Parallel to the direction of level
D. None of these
2 The principle of superposition states that
A. The total displacement due to several waves is the sum of the displacement due to those waves acting individually
B. Two stationary waves superimpose to give two progressive waves
C. A diffraction pattern consists of many interference patterns superimposed on one another
D. Two progressive waves superimpose to give a stationary wave
3 The vibrations of factory floor caused by the running of heavy machinery is an example of
A. free vibration
B. natural vibrations
C. forced vibrations
D. all of them
4 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
5 When a body is performing S.H.M., its acceleration is
A. inversely proportional to the displacement
B. directly proportional to the applied force
C. directly proportional to the amplitude
D. directly proportional to the displacement but in opposite direction
6 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them
7 The number of vibrating body at any instant from its equilibrium position is called
A. displacement
B. frequency
C. amplitude
D. time period
8 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
9 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves
10 When two progressive waves of nearly same frequencies superimpose and give rise to beats, then
A. Frequency of beat changes with time
B. Frequency of beat changes with location of observer
C. All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves
D. Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves

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