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

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Question # 2

The total energy of spring mass system is

Question # 3

The expression of Hook's law is

Question # 4

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

Question # 5

When temperature increase, the frequency of a tuning fork

Question # 6

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

Question # 7

Which of the following is the longitudinal waves?

Question # 8

Angular frequency 'w' is basically a characteristics of

Question # 9

SI unit of frequency is

Question # 10

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 11

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

Question # 12

Crests and troughs are formed in:

Question # 13

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Question # 14

The wave form of S.H.M will be

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 The speed of sound in a medium depends on
A. The elastic property but not on the inertia property
B. The inertia property but not on the elastic property
C. The elastic property as well as the inertia property
D. Neither the elastic property nor the inertia property
3 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
4 The waves in which the particles of the medium have displacement along the direction of propagation of waves are called
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
5 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob
6 When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:
A. Longitudinal waves
B. Transverse waves
C. Water waves
D. Complex waves
7 An object undergoes S.H.M has maximum speed when its displacement from the mean position is
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
8 When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
A. applied force
B. momentum
C. restoring force
D. none of them
9 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
10 When the bob of simple pendulum is at extreme position, its K.E. will be
A. maximum
B. minimum
C. zero
D. all of them

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