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

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

Question # 2

A traveling wave has a shape of:

Question # 3

Smaller the damping, greater will be the

Question # 4

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

Question # 5

A body is executing free vibrations when it oscilates

Question # 6

A weakly damped system has fairly

Question # 7

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Question # 8

The velocity of sound in air depends upon

Question # 9

The damping depends upon the

Question # 10

The expression of Hook's law is

Question # 11

Laplace formula is derived from

Question # 12

Which of the following is an example of a S.H.M?

Question # 13

Two sources of sound are said to be coherent if

Question # 14

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

Question # 15

The waves produced in a microwave oven have wavelength.

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
2 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
3 In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is
A. Same
B. 2 times
C. 4 times
D. 8 times
4 If the length of a simple pendulum is 0.25 m its time period would be
A. 1.0 s
B. 2.0 s
C. 3.0 s
D. 4.0 s
5 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
6 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
7 The instantaneous velocity of a body moving along a circle is directed
A. along the radius
B. along the tangent
C. away from the circle
D. none of them
8 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
9 If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:
A. Stationary waves
B. Transverse waves
C. Both of these
D. None of these
10 When sound waves travel from air to water which of these remains constant?
A. Velocity
B. Frequency
C. Wavelength
D. All the above

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