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

Which of the following changes at an antinode in a stationary wave?

Question # 3

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 4

The waves which propagate by the collision of material particles are known as

Question # 5

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

Question # 6

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 7

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

Question # 8

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 9

A swing has

Question # 10

The process in which energy is dissipated from the oscillating system is known as

Question # 11

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

Question # 12

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

Question # 13

The vibratory or oscillatory motion of a body is

Question # 14

Laplace formula is derived from

Question # 15

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
2 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion
3 transverse wave motion is possible in:
A. Air
B. A mixture of NH3and O2
C. Strings
D. All of these
4 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
5 The speed of sound in a medium depends on
A. The elastic property but not on the inertia property
B. The inertia property but not on the elastic property
C. The elastic property as well as the inertia property
D. Neither the elastic property nor the inertia property
6 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
A. rotatory motion
B. motion under gravity
C. angular motion
D. simple harmonic motion
7 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
8 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
9 Time period of a simple pendulum depends upon the
A. length of the pendulum
B. acceleration due to gravity
C. none of them
D. both of them
10 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

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