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

Question # 2

Longitudinal waves are also called:

Question # 3

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

Question # 4

The distance covered by the wave during one period is called its:

Question # 5

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 6

If the mass of the simple pendulum becomes double, its time period

Question # 7

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

Question # 8

The waves produced in a microwave oven have frequency

Question # 9

The process in which energy is dissipated from the oscillating system is known as

Question # 10

Sound waves in air always

Question # 11

Mechanical waves on the surface of a liquid are

Question # 12

The velocity of sound in air depends upon

Question # 13

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

Question # 14

If the time period a simple pendulum is 2 s, its frequency would be

Question # 15

Smaller the damping, greater will be the

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In a resonance situation the amplitude of the motion may become extra ordinarily large, if
A. the driving force is large
B. the driving force is zero
C. the driving force may be feeble
D. all of them
2 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
3 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
4 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
5 In transverse waves, the individual particles of the medium move:
A. In circles
B. Perpendicular to the direction of level
C. Parallel to the direction of level
D. None of these
6 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
7 When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be
A. W=Kxo
B. W=1/2Kxo
C. W=1/2Kx2o
D. W=4Kxo
8 It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice
A. Has a definite pitch
B. Has a definite quality
C. Has a definite capacity
D. Can penetrate the wall
9 The weight 'mg' of the bob is resolved into
A. one component
B. two components
C. three components
D. four components
10 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line

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