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

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Question # 2

When temperature increase, the frequency of a tuning fork

Question # 3

The wave form of S.H.M will be

Question # 4

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

Question # 5

Smaller the damping, greater will be the

Question # 6

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

Question # 7

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

Question # 8

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Question # 9

When a wave is travels from one place to another, it transfers:

Question # 10

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:

Question # 11

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

Question # 12

A swing has

Question # 13

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 14

The waves produced in a microwave oven have wavelength.

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The loudness and pitch of a sound note depends on
A. Intensity and velocity
B. Frequency and velocity
C. Intensity and frequency
D. Frequency and number of harmonic
2 Which one of the following is an example of resonance
A. swing
B. tuning a radio
C. microwave oven
D. all of them
3 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
4 It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be
A. 60°
B. 90°
C. 120°
D. 180°
5 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
6 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
7 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
8 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
9 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them
10 If the displacement of a body executing S.H.M is plotted against time, then the curve is known as
A. frequency of S.H.M
B. period of S.H.M
C. wave form
D. none of them

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