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

Which one is not produced by sound waves in air?

Question # 2

The weight 'mg' of the bob is resolved into

Question # 3

The characteristic of a body executing S.H.M is that its acceleration is

Question # 4

transverse wave motion is possible in:

Question # 5

Acceleration of the mass at any instant is given by

Question # 6

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

Question # 7

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

Question # 8

When sound waves travel from air to water which of these remains constant?

Question # 9

The velocity of sound in air not effected by changes in

Question # 10

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 11

Smaller the damping, greater will be the

Question # 12

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 13

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

Question # 14

The vibratory or oscillatory motion of a body is

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
2 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
3 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these
4 Smaller the damping, the resonance will be
A. more flat
B. more sharp
C. both of them
D. none of them
5 A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is
A. 2 m
B. 1 m
C. 0.5 m
D. 4 m
6 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
7 The restoring force always directed towards the
A. extreme position
B. mean position
C. both of them
D. none of them
8 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period
9 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
10 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them

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