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

The waves produced in a microwave oven have wavelength.

Question # 2

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Question # 3

The restoring force always directed towards the

Question # 4

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 5

Which one is not produced by sound waves in air?

Question # 6

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 7

Which one of the following is an example of resonance

Question # 8

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

Question # 9

Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

Question # 10

A swing has

Question # 11

If a wave can be polarized, it must be

Question # 12

A body is executing free vibrations when it oscilates

Question # 13

The velocity of sound at same temperature is maximum in

Question # 14

A traveling wave has a shape of:

Question # 15

Time period of simple pendulum is independent of

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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 Fidelity refers to
A. Reproduction of original sound
B. Reproduction of original image
C. Reproduction of music
D. Reproduction of a CD from original copy
3 Which of the following changes at an antinode in a stationary wave?
A. Density only
B. Pressure only
C. Both pressure and density
D. Neither pressure nor density
4 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
5 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
6 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
7 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
8 Which waves are used in sonography?
A. Microwaves
B. Infra red waved
C. Sound waves
D. Ultrasonic waves
9 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
10 If a wave can be polarized, it must be
A. An electromagnetic wave
B. A longitudinal wave
C. A progressive wave
D. A transverse wave

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