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

Question # 2

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

Question # 3

The wave motion set up in any medium depends upon:

Question # 4

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 5

For production of beats the two sources must have

Question # 6

While describing the motion of a simple pendulum, the frictional effects are

Question # 7

Which waves are used in sonography?

Question # 8

The velocity of sound in air not effected by changes in

Question # 9

A heavily damped system has a fairly

Question # 10

SI unit of frequency is

Question # 11

The waves moving from a sitar to a listener in air are

Question # 12

The principle of superposition states that

Question # 13

Smaller the damping, greater will be the

Question # 14

The expression for restoring force is

Question # 15

The phase determines the

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
2 The velocity of sound in air not effected by changes in
A. Moisture contents in air
B. Temperature of air
C. The atmosphere pressure
D. The composition of air
3 Time period of a simple pendulum depends upon the
A. length of the pendulum
B. acceleration due to gravity
C. none of them
D. both of them
4 When sound waves travel from air to water which of these remains constant?
A. Velocity
B. Frequency
C. Wavelength
D. All the above
5 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves
6 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A. Interference
B. Diffraction
C. Polarization
D. Refraction
7 When two progressive waves of nearly same frequencies superimpose and give rise to beats, then
A. Frequency of beat changes with time
B. Frequency of beat changes with location of observer
C. All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves
D. Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves
8 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
9 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
10 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma

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