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

In transverse waves, the individual particles of the medium move:

Question # 3

In stationary waves

Question # 4

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

Question # 5

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

Question # 6

If F=0.04 N and X=4 cm then K=

Question # 7

The time period of pendulums of different lengths would be

Question # 8

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

Question # 9

A swing has

Question # 10

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

Question # 11

Si units of time period is

Question # 12

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

Question # 13

At 'resonance' the transfer of energy from deriving source to the oscillator is

Question # 14

If the length of a simple pendulum is 0.25 m its time period would be

Question # 15

If the mass of the simple pendulum becomes double, its time period

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Sr.# Question Answer
1 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
2 If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is
A. 360 m/s
B. 306 m/s
C. 331 m/s
D. 340 ms
3 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
4 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
5 When two progressive waves of nearly same frequencies superimpose and give rise to beats, then
A. Frequency of beat changes with time
B. Frequency of beat changes with location of observer
C. All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves
D. Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves
6 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
7 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A. Interference
B. Diffraction
C. Polarization
D. Refraction
8 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
9 The principle of superposition states that
A. The total displacement due to several waves is the sum of the displacement due to those waves acting individually
B. Two stationary waves superimpose to give two progressive waves
C. A diffraction pattern consists of many interference patterns superimposed on one another
D. Two progressive waves superimpose to give a stationary wave
10 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these

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