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

Question # 2

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

Question # 3

To hear a clear echo, the reflecting surface must be at a minimum distance of

Question # 4

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

Question # 5

Fluids can transmit:

Question # 6

In compressional wave,the layer of medium having reduced pressure is called:

Question # 7

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

Question # 8

Example of vibratory motion is

Question # 9

The velocity of sound is greatest in

Question # 10

The frequency of free vibrations is known as

Question # 11

Time period of simple pendulum is independent of

Question # 12

The portion of the water above its mean level forms a:

Question # 13

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

Question # 14

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 15

Shock absorber of the car is an example of

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
2 If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be
A. Increasing by a factor of 2
B. Decreasing by a factor of 2
C. Decreasing by a factor of 4
D. Unchanged
3 If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is
A. 360 m/s
B. 306 m/s
C. 331 m/s
D. 340 ms
4 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
5 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
6 Which of the following medium/media can transmit both transverse and longitudinal waves:
A. Solids
B. Liquids
C. Gases
D. All of them
7 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion
8 The waves which propagate through the oscillations of material particles are known as:
A. Mechanical waves
B. Electromagnetic waves
C. Any of them
D. None of them
9 The principle of superposition states that
A. The total displacement due to several waves is the sum of the displacement due to those waves acting individually
B. Two stationary waves superimpose to give two progressive waves
C. A diffraction pattern consists of many interference patterns superimposed on one another
D. Two progressive waves superimpose to give a stationary wave
10 Two sources of sound are said to be coherent if
A. The produce sounds of equal intensity
B. They produce sounds of equal frequency
C. They produce sound waves vibrating with the same phase
D. They produce sound waves with zero or constant phase difference all instant of time

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