ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

Mechanical waves on the surface of a liquid are

Question # 2

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

Question # 3

The velocity of sound is greatest in

Question # 4

Which of the following is an example of a S.H.M?

Question # 5

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 6

A second's pendulum is a pendulum whose time period is

Question # 7

In the resonance condition, the amplitude of the oscillator becomes

Question # 8

The velocity of sound at same temperature is maximum in

Question # 9

Example of vibratory motion is

Question # 10

SI unit of wave length is:

Question # 11

Which one of the following is an example of resonance

Question # 12

Which of the following does not exhibit S.H.M?

Question # 13

The total energy of spring mass system is

Question # 14

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

Question # 15

The distance covered by the wave in one second is:

Question # 16

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 17

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

Question # 18

Velocity of sound in vacuum (in m/s) is

Question # 19

The wave form of S.H.M will be

Question # 20

The time period of pendulums of different lengths would be

Question # 21

Waves transport energy

Question # 22

A traveling wave has a shape of:

Question # 23

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

Question # 24

The vibratory or oscillatory motion of a body is

Question # 25

Acceleration of the mass at any instant is given by

Question # 26

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

Question # 27

In the same medium, velocity of the wave:

Question # 28

When a body is performing S.H.M., its acceleration is

Question # 29

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 30

The waves produced in a microwave oven have frequency

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 The bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
3 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion
4 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
5 The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called
A. rotatory motion
B. motion under gravity
C. angular motion
D. simple harmonic motion
6 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
7 If we increase the length of a simple pendulum four times, its time period will become
A. 2 times
B. 3 times
C. 4 times
D. 6 times
8 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
9 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
10 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes

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