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

A heavily damped system has a fairly

Question # 2

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

Question # 3

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

Question # 4

Ultra-violet rays differ from X-rays in that they

Question # 5

Smaller the damping, the resonance will be

Question # 6

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 7

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

Question # 8

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

Question # 9

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?

Question # 10

Acceleration of the mass at any instant is given by

Question # 11

One complete round trip of the body about its mean position is called

Question # 12

Through which character we can distinguish the light waves from sound waves

Question # 13

Which of the following is not mechanical wave?

Question # 14

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

Question # 15

Sound waves in air always

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
3 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
4 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
5 When two waves with same frequency and constant phase difference phase difference interfere
A. There is a gain of energy
B. There is a loss of energy
C. The energy is redistributed and the distribution changes with time
D. The energy is redistributed and the distribution remains constant with time
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 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 The resonance will be sharp, if the amplitude decreases rapidly at a frequency
A. equal to the resonant frequency
B. slight different from the resonant frequency
C. greatly different from the resonant frequency
D. any one of them
9 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
10 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them

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