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 heavily damped system has a fairly

Question # 2

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 3

In case of mechanical waves, we study the motion of

Question # 4

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 5

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 6

Velocity of sound in vacuum (in m/s) is

Question # 7

The example of mechanical wave is

Question # 8

Which of the following is not mechanical wave?

Question # 9

Acceleration of the mass at any instant is given by

Question # 10

A body is executing free vibrations when it oscilates

Question # 11

The vibratory or oscillatory motion of a body is

Question # 12

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

Question # 13

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

Question # 14

The maximum displacement of a body on either side of its equilibrium position is called

Question # 15

The loudness and pitch of a sound note depends on

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
2 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
3 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
4 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
5 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
6 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
7 The frequency of free vibrations is known as
A. free frequency
B. forced frequency
C. natural frequency
D. un-natural frequency
8 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
9 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
10 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

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