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 waves are used in sonography?

Question # 2

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Question # 3

In transverse waves, the individual particles of the medium move:

Question # 4

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

Question # 5

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

Question # 6

Mechanical waves on the surface of a liquid are

Question # 7

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 8

Laplace formula is derived from

Question # 9

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

Question # 10

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 11

If the time period a simple pendulum is 2 s, its frequency would be

Question # 12

The waves which propagate through the oscillations of material particles are known as:

Question # 13

Time period of a simple pendulum depends upon the

Question # 14

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

Question # 15

For a body executing S. H. M, its

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
2 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
3 A body is executing free vibrations when it oscilates
A. with the interference of an external force
B. without the interference of an external force
C. with the interference of an internal force
D. none of them
4 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
5 Fidelity refers to
A. Reproduction of original sound
B. Reproduction of original image
C. Reproduction of music
D. Reproduction of a CD from original copy
6 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
7 What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?
A. 1 MHz
B. 10 Hz
C. 1 GHz
D. 100000 Hz
8 When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be
A. W=Kxo
B. W=1/2Kxo
C. W=1/2Kx2o
D. W=4Kxo
9 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
10 If a simple pendulum is shifted from karachi to K-2 cliff, its time period
A. remains the same
B. decreases
C. increases
D. none of them

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