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 of the following is not mechanical wave?

Question # 2

Of the following, the option ______ reminds of longitudinal waves.

Question # 3

A body is executing free vibrations when it oscilates

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 waves produced in a microwave oven have wavelength.

Question # 6

A wave, which transfer energy by moving away from the source of disturbance is called a

Question # 7

In case of mechanical waves, we study the motion of

Question # 8

The instantaneous velocity of a body moving along a circle is directed

Question # 9

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 # 10

In compressional wave,the layer of medium having reduced pressure is called:

Question # 11

The example of mechanical wave is

Question # 12

Waves transport energy

Question # 13

SI unit of wave length is:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line
3 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
4 A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:
A. Longitudinal wave
B. Transverse wave
C. No vibration at all
D. None of them
5 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
6 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob
7 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°
8 A body is executing free vibrations when it oscilates
A. with the interference of an external force
B. without the interference of an external force
C. with the interference of an internal force
D. none of them
9 transverse wave motion is possible in:
A. Air
B. A mixture of NH3and O2
C. Strings
D. All of these
10 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them

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