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

Question # 2

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Question # 3

Mechanical waves on the surface of a liquid are

Question # 4

The velocity of sound in air not effected by changes in

Question # 5

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Question # 6

In the resonance condition, the amplitude of the oscillator becomes

Question # 7

In solids, only following type/s of wave can travel:

Question # 8

Longitudinal waves are also called:

Question # 9

If the length of second pendulum becomes four times then its time period will become

Question # 10

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

Question # 11

In compressional wave,the layer of medium having reduced pressure is called:

Question # 12

When temperature increase, the frequency of a tuning fork

Question # 13

A body is executing free vibrations when it oscilates

Question # 14

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

Question # 15

Si units of time period is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them
2 Waves transport energy
A. without transport energy
B. with matter
C. both of them
D. none of them
3 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
4 transverse wave motion is possible in:
A. Air
B. A mixture of NH3and O2
C. Strings
D. All of these
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 characteristic of a body executing S.H.M is that its acceleration is
A. inversely proportional to displacement
B. directly proportional to displacement
C. independent of displacement
D. equal to zero
7 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
8 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
9 Which of the following is an example of a S.H.M?
A. motion of a projectile
B. motion of a train along a circular path
C. motion of swing
D. electrons revolving sound the nucleus
10 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them

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