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

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 2

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

Question # 3

Shock absorber of the car is an example of

Question # 4

When temperature increase, the frequency of a tuning fork

Question # 5

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 6

A traveling wave has a shape of:

Question # 7

Mechanical waves on the surface of a liquid are

Question # 8

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 9

A swing has

Question # 10

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 11

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

Question # 12

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

Question # 13

A weakly damped system has fairly

Question # 14

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 15

The instantaneous velocity of a body moving along a circle is directed

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When the bob of simple pendulum is at mean position, its K.E will be
A. maximum
B. minimum
C. zero
D. all of them
2 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
3 Which one is not produced by sound waves in air?
A. Polarization
B. Diffraction
C. Refraction
D. Reflection
4 The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:
A. Mechanical waves
B. Electromagnetic waves
C. Matter waves
D. All of them
5 Crests and troughs are formed in:
A. Longitudinal waves
B. Transverse waves
C. Both of these
D. None of these
6 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
7 When sound waves travel from air to water which of these remains constant?
A. Velocity
B. Frequency
C. Wavelength
D. All the above
8 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
9 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
10 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

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