ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

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

Try The 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 restoring force always directed towards the

Question # 3

In transverse waves, the individual particles of the medium move:

Question # 4

In the same medium, velocity of the wave:

Question # 5

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

Question # 6

The portion of the water above its mean level forms a:

Question # 7

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 # 8

Of the following, the option ______ reminds of longitudinal waves.

Question # 9

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

Question # 10

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

Question # 11

Waves transport energy

Question # 12

A weakly damped system has fairly

Question # 13

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

Question # 14

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

Question # 15

The vibratory or oscillatory motion of a body is

Question # 16

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

Question # 17

Which one of the following elasticizes is possessed by fluids:

Question # 18

Which of the following is not mechanical wave?

Question # 19

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 20

The bob of a simple pendulum is suspended by

Question # 21

The expression for restoring force is

Question # 22

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 23

When a body moves to and fro motion, this type of motion is called

Question # 24

The velocity of sound is greatest in

Question # 25

Laplace formula is derived from

Question # 26

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 27

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 # 28

The process in which energy is dissipated from the oscillating system is known as

Question # 29

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

Question # 30

Decibel is unit of

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A. Interference
B. Diffraction
C. Polarization
D. Refraction
4 It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be
A. 60°
B. 90°
C. 120°
D. 180°
5 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
6 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them
7 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
8 Waves transport energy
A. without transport energy
B. with matter
C. both of them
D. none of them
9 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them
10 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these

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