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

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

Question # 2

Which of the following does not exhibit S.H.M?

Question # 3

When an oscillatory motion repeats itself, then this type of motion is called

Question # 4

Two sources of sound are said to be coherent if

Question # 5

Fluids can transmit:

Question # 6

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Question # 7

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 8

While describing the motion of a simple pendulum, the frictional effects are

Question # 9

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 # 10

Which of the following medium/media can transmit both transverse and longitudinal waves:

Question # 11

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 12

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

Question # 13

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

Question # 14

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

Question # 15

The waves produced in a microwave oven have frequency

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves
2 In transverse waves, the individual particles of the medium move:
A. In circles
B. Perpendicular to the direction of level
C. Parallel to the direction of level
D. None of these
3 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
4 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
5 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line
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 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
8 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
9 The number of vibrating body at any instant from its equilibrium position is called
A. displacement
B. frequency
C. amplitude
D. time period
10 The force which opposes the applied force producing the displacement in the spring is called
A. restoring force
B. periodic force
C. centripetal force
D. resistive force

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