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

Question # 2

The damping depends upon the

Question # 3

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Question # 4

The waves produced in a microwave oven have wavelength.

Question # 5

The velocity of sound in air depends upon

Question # 6

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

Question # 7

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

Question # 8

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

Question # 9

Which of the following changes at an antinode in a stationary wave?

Question # 10

Si units of time period is

Question # 11

The restoring force always directed towards the

Question # 12

The velocity of sound in air not effected by changes in

Question # 13

Of the following, the option ______ reminds of longitudinal waves.

Question # 14

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

Question # 15

In stationary waves

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 If a simple pendulum is shifted from karachi to K-2 cliff, its time period
A. remains the same
B. decreases
C. increases
D. none of them
2 Which one is not produced by sound waves in air?
A. Polarization
B. Diffraction
C. Refraction
D. Reflection
3 When a body is performing S.H.M., its acceleration is
A. inversely proportional to the displacement
B. directly proportional to the applied force
C. directly proportional to the amplitude
D. directly proportional to the displacement but in opposite direction
4 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
5 Longitudinal waves are also called:
A. Congressional waves
B. Transverse waves
C. Radio waves
D. None of them
6 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
7 The frequency of free vibrations is known as
A. free frequency
B. forced frequency
C. natural frequency
D. un-natural frequency
8 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these
9 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
10 Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as
A. waves
B. beat
C. interference
D. resonance

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