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 one of the following could be the frequency of ultraviolet radiation?

Question # 2

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

Question # 3

The restoring force always directed towards the

Question # 4

The waves produced in a microwave oven have wavelength.

Question # 5

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

Question # 6

The process in which energy is dissipated from the oscillating system is known as

Question # 7

The number of vibrating body at any instant from its equilibrium position is called

Question # 8

In the resonance condition, the amplitude of the oscillator becomes

Question # 9

The principle of superposition states that

Question # 10

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

Question # 11

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

Question # 12

Angular frequency 'w' is basically a characteristics of

Question # 13

A weakly damped system has fairly

Question # 14

If we increase the length of a simple pendulum four times, its time period will become

Question # 15

When two waves with same frequency and constant phase difference phase difference interfere

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal
2 A wave, which transfer energy by moving away from the source of disturbance is called a
A. progressive wave
B. travelling wave
C. both of them
D. none of them
3 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field
4 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
5 If F=0.04 N and X=4 cm then K=
A. 1 Nm-1
B. 2 Nm-1
C. 3 Nm-1
D. 4 Nm-1
6 If the time period a simple pendulum is 2 s, its frequency would be
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz
7 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
8 The square of 0.4 is:
A. Greater than 0.4
B. Smaller than 0.4
C. Equal to 0.4
D. None of them
9 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
10 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz

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