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

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

Question # 3

The force which opposes the applied force producing the displacement in the spring is called

Question # 4

When the bob of simple pendulum is at mean position, its K.E will be

Question # 5

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 6

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

Question # 7

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

Question # 8

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 9

A weakly damped system has fairly

Question # 10

The restoring force always directed towards the

Question # 11

Time period of simple pendulum is independent of

Question # 12

The square of 0.4 is:

Question # 13

If we increase the length of a simple pendulum four times, its time period will become

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The process in which energy is dissipated from the oscillating system is known as
A. resonance
B. interference
C. diffraction
D. damping
2 If the time period a simple pendulum is 2 s, its frequency would be
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz
3 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
4 Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec
5 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
6 When a wave is travels from one place to another, it transfers:
A. Matter
B. Energy
C. Momentum
D. Both B and C
7 The square of 0.4 is:
A. Greater than 0.4
B. Smaller than 0.4
C. Equal to 0.4
D. None of them
8 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
9 When a body moves to and fro motion, this type of motion is called
A. translatory motion
B. circular motion
C. oscillatory motion
D. all of them
10 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

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