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

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Question # 2

A traveling wave has a shape of:

Question # 3

The vibratory or oscillatory motion of a body is

Question # 4

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

Question # 5

A heavily damped system has a fairly

Question # 6

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

Question # 7

A weakly damped system has fairly

Question # 8

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 9

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

Question # 10

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

Question # 11

The number of vibrating body at any instant from its equilibrium position is called

Question # 12

The maximum displacement of a body on either side of its equilibrium position is called

Question # 13

Through which character we can distinguish the light waves from sound waves

Question # 14

If the length of second pendulum becomes four times then its time period will become

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
2 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
3 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
4 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
5 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
6 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
7 If the time period a simple pendulum is 2 s, its frequency would be
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz
8 Which waves are used in sonography?
A. Microwaves
B. Infra red waved
C. Sound waves
D. Ultrasonic waves
9 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
10 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

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