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

Question # 2

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 # 3

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Question # 4

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

Question # 5

The maximum displacement of a body on either side of its equilibrium position is called

Question # 6

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

Question # 7

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

Question # 8

In solids, only following type/s of wave can travel:

Question # 9

The characteristic of a body executing S.H.M is that its acceleration is

Question # 10

If the length of second pendulum becomes four times then its time period will become

Question # 11

A weakly damped system has fairly

Question # 12

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

Question # 13

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

Question # 14

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 15

A swing has

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The weight 'mg' of the bob is resolved into
A. one component
B. two components
C. three components
D. four components
2 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
3 Two sources of sound are said to be coherent if
A. The produce sounds of equal intensity
B. They produce sounds of equal frequency
C. They produce sound waves vibrating with the same phase
D. They produce sound waves with zero or constant phase difference all instant of time
4 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
5 Through which character we can distinguish the light waves from sound waves
A. Interference
B. Refraction
C. Polarization
D. Reflection
6 What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?
A. 1 MHz
B. 10 Hz
C. 1 GHz
D. 100000 Hz
7 A heavily damped system has a fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
8 When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:
A. Longitudinal waves
B. Transverse waves
C. Water waves
D. Complex waves
9 A second's pendulum is a pendulum whose time period is
A. 1 second
B. 2 seconds
C. 3 seconds
D. 4 seconds
10 The time required to complete on vibration is called
A. frequency
B. total time
C. time period
D. velocity

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