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 phase determines the

Question # 2

Two sources of sound are said to be coherent if

Question # 3

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

Question # 4

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

Question # 5

A second's pendulum is a pendulum whose time period is

Question # 6

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

Question # 7

Which waves are used in sonography?

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 12

The waves produced in a microwave oven have frequency

Question # 13

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 14

Time period of simple pendulum is independent of

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
4 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
5 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
6 The velocity of sound in air not effected by changes in
A. Moisture contents in air
B. Temperature of air
C. The atmosphere pressure
D. The composition of air
7 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
8 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
9 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
10 The waves which propagate by the collision of material particles are known as
A. e.m. waves
B. mechanical waves
C. light waves
D. microwaves

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