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

The waves produced in a microwave oven have wavelength.

Question # 2

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

Question # 3

Angular frequency 'w' is basically a characteristics of

Question # 4

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 5

Which type of wave can be set up in solids

Question # 6

For production of beats the two sources must have

Question # 7

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

Question # 8

A swing has

Question # 9

Which one is not produced by sound waves in air?

Question # 10

There is no net transfer of energy by particle of medium in

Question # 11

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

Question # 12

Fluids can transmit:

Question # 13

Laplace formula is derived from

Question # 14

Time period of simple pendulum is independent of

Question # 15

If a freely oscillating system is subjected to an external force, then

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 The distance covered by the wave in one second is:
A. Wave number
B. Wave length
C. Frequency
D. Wave speed
3 A second's pendulum is a pendulum whose time period is
A. 1 second
B. 2 seconds
C. 3 seconds
D. 4 seconds
4 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
5 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
6 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
7 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
8 When a body is performing S.H.M., its acceleration is
A. inversely proportional to the displacement
B. directly proportional to the applied force
C. directly proportional to the amplitude
D. directly proportional to the displacement but in opposite direction
9 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
10 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave

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