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 body is performing S.H.M., its acceleration is

Question # 2

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 3

The maximum displacement of a body on either side of its equilibrium position is called

Question # 4

The velocity of sound in air depends upon

Question # 5

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

Question # 6

Example of vibratory motion is

Question # 7

A traveling wave has a shape of:

Question # 8

For a body executing S. H. M, its

Question # 9

Which of the following does not exhibit S.H.M?

Question # 10

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Question # 11

Longitudinal waves are also called:

Question # 12

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 13

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

Question # 14

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

Question # 15

Shock absorber of the car is an example of

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are
A. Energy, momentum and mass
B. Energy
C. Energy and mass
D. Energy and linear momentum
2 The waves which propagate through the oscillations of material particles are known as:
A. Mechanical waves
B. Electromagnetic waves
C. Any of them
D. None of them
3 Which of the following changes at an antinode in a stationary wave?
A. Density only
B. Pressure only
C. Both pressure and density
D. Neither pressure nor density
4 When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
A. applied force
B. momentum
C. restoring force
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 maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
7 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
8 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
9 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
10 A heavily damped system has a fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them

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