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

Through which character we can distinguish the light waves from sound waves

Question # 2

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

Question # 3

The example of mechanical wave is

Question # 4

When a body is performing S.H.M., its acceleration is

Question # 5

When temperature increase, the frequency of a tuning fork

Question # 6

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

Question # 7

Which waves are used in sonography?

Question # 8

The waves which propagate through the oscillations of material particles are known as:

Question # 9

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

Question # 10

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 11

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

Question # 12

The frequency of free vibrations is known as

Question # 13

Two sources of sound are said to be coherent if

Question # 14

The speed of sound in a medium depends on

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Time period of simple pendulum is independent of
A. length
B. mass
C. acceleration due to gravity
D. none of them
2 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
3 The time required to complete on vibration is called
A. frequency
B. total time
C. time period
D. velocity
4 Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:
A. Rope
B. Coil of spring
C. Water
D. All of them
5 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
6 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
7 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these
8 The weight 'mg' of the bob is resolved into
A. one component
B. two components
C. three components
D. four components
9 Fluids can transmit:
A. Transverse wave
B. Compressional wave
C. Both of them
D. None of them
10 If a freely oscillating system is subjected to an external force, then
A. free vibrations will take place
B. the body will move with its natural frequency
C. forced vibrations will take place
D. none of them

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