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 waves produced in a microwave oven have frequency

Question # 2

If the length of a simple pendulum is 0.25 m its time period would be

Question # 3

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 # 4

Energy is not carried by

Question # 5

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

Question # 6

The distance covered by the wave in one second is:

Question # 7

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 8

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 9

In case of mechanical waves, we study the motion of

Question # 10

The velocity of sound in air not effected by changes in

Question # 11

The phase determines the

Question # 12

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Question # 13

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Question # 14

The characteristic of a body executing S.H.M is that its acceleration is

Question # 15

If F=0.04 N and X=4 cm then K=

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The velocity of sound in air depends upon
A. Density and elasticity of gas
B. Pressure
C. Wavelength
D. Amplitude and frequency of sound
2 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
3 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them
4 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
5 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them
6 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal
7 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them
8 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
9 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
10 The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them

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