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

Question # 2

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 3

The wave motion set up in any medium depends upon:

Question # 4

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Question # 5

The velocity of sound in air not effected by changes in

Question # 6

In the same medium, velocity of the wave:

Question # 7

The velocity of sound in air depends upon

Question # 8

The frequency of free vibrations is known as

Question # 9

transverse wave motion is possible in:

Question # 10

The example of mechanical wave is

Question # 11

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 12

The waves which propagate by the collision of material particles are known as

Question # 13

If we increase the length of a simple pendulum four times, its time period will become

Question # 14

Decibel is unit of

Question # 15

The time required to complete on vibration is called

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 If the length of a simple pendulum is 0.25 m its time period would be
A. 1.0 s
B. 2.0 s
C. 3.0 s
D. 4.0 s
2 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
3 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
4 The number of vibrating body at any instant from its equilibrium position is called
A. displacement
B. frequency
C. amplitude
D. time period
5 The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be
A. 1 : 2
B. 4 : 1
C. 1 : 4
D. 2 : 1
6 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
7 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
8 Acceleration of the mass at any instant is given by
A. a=k/m x
B. a= - m/k x
C. a = - k/m x
D. a=m/k x
9 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
10 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal

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