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

Which one of the following could be the frequency of ultraviolet radiation?

Question # 2

Which of the following does not exhibit S.H.M?

Question # 3

A physical system under going forced vibrations is known as

Question # 4

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

Question # 5

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

Question # 6

Smaller the damping, greater will be the

Question # 7

Example of progressive wave is

Question # 8

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

Question # 9

Smaller the damping, the resonance will be

Question # 10

One complete round trip of the body about its mean position is called

Question # 11

Si units of time period is

Question # 12

In the same medium, velocity of the wave:

Question # 13

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

Question # 14

The waves produced in a microwave oven have frequency

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The loudness and pitch of a sound note depends on
A. Intensity and velocity
B. Frequency and velocity
C. Intensity and frequency
D. Frequency and number of harmonic
2 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line
3 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:
A. kg
B. kg-meter
C. kg/meter
D. Meter/kg
4 The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be
A. 1 : 2
B. 4 : 1
C. 1 : 4
D. 2 : 1
5 In a resonance situation the amplitude of the motion may become extra ordinarily large, if
A. the driving force is large
B. the driving force is zero
C. the driving force may be feeble
D. all of them
6 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
7 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m
8 If we increase the length of a simple pendulum four times, its time period will become
A. 2 times
B. 3 times
C. 4 times
D. 6 times
9 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
10 When a wave is travels from one place to another, it transfers:
A. Matter
B. Energy
C. Momentum
D. Both B and C

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