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

A physical system under going forced vibrations is known as

Question # 2

A swing has

Question # 3

A body is executing free vibrations when it oscilates

Question # 4

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

Question # 5

For transmission of both transverse and longitudinal waves, we can use:

Question # 6

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 7

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

Question # 8

The loudness and pitch of a sound note depends on

Question # 9

Which of the following medium/media can transmit both transverse and longitudinal waves:

Question # 10

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Question # 11

The expression of Hook's law is

Question # 12

Laplace formula is derived from

Question # 13

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

Question # 14

One complete round trip of the body about its mean position is called

Question # 15

The example of mechanical wave is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The frequency of free vibrations is known as
A. free frequency
B. forced frequency
C. natural frequency
D. un-natural frequency
2 The waves which propagate by the collision of material particles are known as
A. e.m. waves
B. mechanical waves
C. light waves
D. microwaves
3 An object undergoes S.H.M has maximum acceleration when its displacement form the means position
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
4 The velocity of sound in air not effected by changes in
A. Moisture contents in air
B. Temperature of air
C. The atmosphere pressure
D. The composition of air
5 The bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
6 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
7 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
8 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
9 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
10 Longitudinal waves are also called:
A. Congressional waves
B. Transverse waves
C. Radio waves
D. None of them

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