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

When a body is performing S.H.M., its acceleration is

Question # 2

SI unit of frequency is

Question # 3

The time required to complete on vibration is called

Question # 4

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

Question # 5

The phase determines the

Question # 6

The wave motion set up in any medium depends upon:

Question # 7

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

Question # 8

The distance covered by the wave in one second is:

Question # 9

A traveling wave has a shape of:

Question # 10

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 11

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

Question # 12

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Question # 13

Acceleration of the mass at any instant is given by

Question # 14

Which one is not produced by sound waves in air?

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The instantaneous velocity of a body moving along a circle is directed
A. along the radius
B. along the tangent
C. away from the circle
D. none of them
2 Time period of simple pendulum is independent of
A. length
B. mass
C. acceleration due to gravity
D. none of them
3 Acceleration of the mass at any instant is given by
A. a=k/m x
B. a= - m/k x
C. a = - k/m x
D. a=m/k x
4 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
5 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
6 When sound waves travel from air to water which of these remains constant?
A. Velocity
B. Frequency
C. Wavelength
D. All the above
7 Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?
A. 100 ms-1
B. 200 ms-1
C. 450 ms-1
D. 900 ms-1
8 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
9 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
10 Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as
A. waves
B. beat
C. interference
D. resonance

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