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

Through which character we can distinguish the light waves from sound waves

Question # 2

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

Question # 3

A heavily damped system has a fairly

Question # 4

If a wave can be polarized, it must be

Question # 5

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

Question # 6

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 # 7

The weight 'mg' of the bob is resolved into

Question # 8

The portion of the water above its mean level forms a:

Question # 9

A body is executing free vibrations when it oscilates

Question # 10

A traveling wave has a shape of:

Question # 11

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

Question # 12

Si units of time period is

Question # 13

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 14

In compressional wave,the layer of medium having reduced pressure is called:

Question # 15

The example of mechanical wave is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them
2 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
3 An object undergoes S.H.M has maximum acceleration when its displacement form the means position
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
4 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
5 Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at
A. subsonic speed
B. sonic speed
C. super sonic speed
D. any one of them
6 Which one of the following wave motions is transverse:
A. Wave motion produced in water when a piece of stone is thrown into it
B. Pulling of weight hanging vertically with a spiral spring
C. Both of these
D. None of these
7 For production of beats the two sources must have
A. Different frequencies and same amplitude
B. Different frequencies
C. Different frequencies, same amplitude and same phase
D. Different frequencies and same phase
8 If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get
A. diffraction
B. beat
C. interference
D. resonance
9 Acceleration of the mass at any instant is given by
A. a=k/m x
B. a= - m/k x
C. a = - k/m x
D. a=m/k x
10 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal

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