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

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

Question # 2

A physical system under going forced vibrations is known as

Question # 3

Energy is not carried by

Question # 4

Laplace formula is derived from

Question # 5

Time period of a simple pendulum depends upon the

Question # 6

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

Question # 7

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

Question # 8

The distance covered by the wave in one second is:

Question # 9

In solids, only following type/s of wave can travel:

Question # 10

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

Question # 11

The weight 'mg' of the bob is resolved into

Question # 12

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

Question # 13

The waves which propagate through the oscillations of material particles are known as:

Question # 14

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

Question # 15

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 16

Velocity of sound in vacuum (in m/s) is

Question # 17

In stationary waves

Question # 18

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

Question # 19

Which type of wave can be set up in solids

Question # 20

Fluids can transmit:

Question # 21

The wave motion set up in any medium depends upon:

Question # 22

Example of vibratory motion is

Question # 23

The restoring force always directed towards the

Question # 24

Acceleration of the mass at any instant is given by

Question # 25

When two waves with same frequency and constant phase difference phase difference interfere

Question # 26

SI unit of frequency is

Question # 27

The phase determines the

Question # 28

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

Question # 29

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

Question # 30

Which one of the following is an example of resonance

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob
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 A traveling wave has a shape of:
A. Square wave
B. Sine wave
C. Parabola
D. hyperbola
5 The process in which energy is dissipated from the oscillating system is known as
A. resonance
B. interference
C. diffraction
D. damping
6 The weight 'mg' of the bob is resolved into
A. one component
B. two components
C. three components
D. four components
7 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
8 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line
9 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
10 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec

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