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

Question # 2

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 3

The example of mechanical wave is

Question # 4

Fidelity refers to

Question # 5

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

Question # 6

Sound waves in air always

Question # 7

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

Question # 8

The expression for restoring force is

Question # 9

When sound waves travel from air to water which of these remains constant?

Question # 10

Which of the following is not mechanical wave?

Question # 11

The distance covered by the wave during one period is called its:

Question # 12

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

Question # 13

Fluids can transmit:

Question # 14

The force which opposes the applied force producing the displacement in the spring is called

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The loudness and pitch of a sound note depends on
A. Intensity and velocity
B. Frequency and velocity
C. Intensity and frequency
D. Frequency and number of harmonic
2 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
3 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
4 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these
5 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
6 If the length of a simple pendulum is 0.25 m its time period would be
A. 1.0 s
B. 2.0 s
C. 3.0 s
D. 4.0 s
7 Waves transport energy
A. without transport energy
B. with matter
C. both of them
D. none of them
8 When a body moves to and fro motion, this type of motion is called
A. translatory motion
B. circular motion
C. oscillatory motion
D. all of them
9 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
10 Smaller the damping, the resonance will be
A. more flat
B. more sharp
C. both of them
D. none of them

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