ECAT Pre Engineering Physics Chapter 8 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 8 Waves

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 8 Waves

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Physics ECAT Pre Engineering Chapter 8 Waves

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Question # 1

If a freely oscillating system is subjected to an external force, then

Question # 2

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

Question # 3

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

Question # 4

The velocity of sound at same temperature is maximum in

Question # 5

The frequency of free vibrations is known as

Question # 6

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

Question # 7

A traveling wave has a shape of:

Question # 8

To hear a clear echo, the reflecting surface must be at a minimum distance of

Question # 9

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

Question # 10

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

Question # 11

In the resonance condition, the amplitude of the oscillator becomes

Question # 12

The damping depends upon the

Question # 13

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

Question # 14

Smaller the damping, the resonance will be

Question # 15

Which of the following is the longitudinal waves?

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is
A. 2 m
B. 1 m
C. 0.5 m
D. 4 m
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 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
4 Time period of a simple pendulum depends upon the
A. length of the pendulum
B. acceleration due to gravity
C. none of them
D. both of them
5 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
6 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
7 When temperature increase, the frequency of a tuning fork
A. Increases
B. Decreases
C. Remains same
D. Increase or decreases depending on the material
8 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
9 The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be
A. 1 : 2
B. 4 : 1
C. 1 : 4
D. 2 : 1
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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