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

In the same medium, velocity of the wave:

Question # 2

The frequency of free vibrations is known as

Question # 3

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

Question # 4

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

Question # 5

Time period of simple pendulum is independent of

Question # 6

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 7

Example of vibratory motion is

Question # 8

A heavily damped system has a fairly

Question # 9

Smaller the damping, greater will be the

Question # 10

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

Question # 11

The restoring force always directed towards the

Question # 12

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 # 13

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

Question # 14

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 15

A second's pendulum is a pendulum whose time period is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 A second's pendulum is a pendulum whose time period is
A. 1 second
B. 2 seconds
C. 3 seconds
D. 4 seconds
2 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
3 If we increase the length of a simple pendulum four times, its time period will become
A. 2 times
B. 3 times
C. 4 times
D. 6 times
4 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
5 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
6 Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec
7 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
8 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them
9 Which one of the following could be the frequency of ultraviolet radiation?
A. 1.0 x 106Hz
B. 1.0 x 109Hz
C. 1.0 x 1012Hz
D. 1.0 x 1015Hz
10 An object undergoes S.H.M has maximum acceleration when its displacement form the means position
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value

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