ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

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 total energy of spring mass system is

Question # 2

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Question # 3

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

Question # 4

Through which character we can distinguish the light waves from sound waves

Question # 5

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 6

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

Question # 7

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 8

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

Question # 9

In stationary waves

Question # 10

A physical system under going forced vibrations is known as

Question # 11

The velocity of sound in air not effected by changes in

Question # 12

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 13

The waves which propagate by the collision of material particles are known as

Question # 14

The time period of pendulums of different lengths would be

Question # 15

Shock absorber of the car is an example of

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
3 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
4 It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be
A. 60°
B. 90°
C. 120°
D. 180°
5 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:
A. kg
B. kg-meter
C. kg/meter
D. Meter/kg
6 The time required to complete on vibration is called
A. frequency
B. total time
C. time period
D. velocity
7 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them
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 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
10 The vibrations of factory floor caused by the running of heavy machinery is an example of
A. free vibration
B. natural vibrations
C. forced vibrations
D. all of them

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