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 waves produced in a microwave oven have wavelength.

Question # 2

When sound waves travel from air to water which of these remains constant?

Question # 3

At 'resonance' the transfer of energy from deriving source to the oscillator is

Question # 4

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

Question # 5

When a body moves to and fro motion, this type of motion is called

Question # 6

The phase determines the

Question # 7

Which one of the following is an example of resonance

Question # 8

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

Question # 9

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 # 10

When an oscillatory motion repeats itself, then this type of motion is called

Question # 11

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Question # 12

The speed of sound in a medium depends on

Question # 13

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 14

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

Question # 15

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
2 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
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 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
5 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob
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 vibrations of factory floor caused by the running of heavy machinery is an example of
A. free vibration
B. natural vibrations
C. forced vibrations
D. all of them
8 Transverse waves can be set up:
A. Solids
B. Liquids
C. Gases
D. All of them
9 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
10 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma

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