ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

In the resonance condition, the amplitude of the oscillator becomes

Question # 2

The distance covered by the wave during one period is called its:

Question # 3

The speed of sound in a medium depends on

Question # 4

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 5

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Question # 6

If F=0.04 N and X=4 cm then K=

Question # 7

The velocity of sound is greatest in

Question # 8

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 9

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

Question # 10

Which type of wave can be set up in solids

Question # 11

A simple pendulum consists of a

Question # 12

Which one of the following is an example of resonance

Question # 13

The expression of Hook's law is

Question # 14

Which waves are used in sonography?

Question # 15

The velocity of sound in air not effected by changes in

Question # 16

SI unit of frequency is

Question # 17

The velocity of sound at same temperature is maximum in

Question # 18

When the bob of simple pendulum is at mean position, its K.E will be

Question # 19

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

Question # 20

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 21

transverse wave motion is possible in:

Question # 22

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

Question # 23

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

Question # 24

Fluids can transmit:

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 29

Si units of time period is

Question # 30

In the same medium, velocity of the wave:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
2 Smaller the damping, the resonance will be
A. more flat
B. more sharp
C. both of them
D. none of them
3 SI unit of wave length is:
A. Kilometer
B. Metre
C. Centimetre
D. Hertz
4 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
5 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
6 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
7 The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:
A. Mechanical waves
B. Electromagnetic waves
C. Matter waves
D. All of them
8 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
9 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:
A. kg
B. kg-meter
C. kg/meter
D. Meter/kg
10 Such oscillations in which the amplitude decreases steadily with time, are called
A. resonance
B. force oscillations
C. large oscillations
D. damped oscillations

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