ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

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

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ECAT Physics Chapter 8 Waves

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Question # 1

The square of 0.4 is:

Question # 2

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 3

Laplace formula is derived from

Question # 4

The speed of sound in a medium depends on

Question # 5

In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is

Question # 6

If the time period a simple pendulum is 2 s, its frequency would be

Question # 7

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

Question # 8

Time period of simple pendulum is independent of

Question # 9

Which one of the following could be the frequency of ultraviolet radiation?

Question # 10

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

Question # 11

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

Question # 12

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 # 13

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

Question # 14

Example of vibratory motion is

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m
4 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
5 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
6 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
7 The waves which propagate through the oscillations of material particles are known as:
A. Mechanical waves
B. Electromagnetic waves
C. Any of them
D. None of them
8 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
9 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
10 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field

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