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

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

Question # 2

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

Question # 3

Two sources of sound are said to be coherent if

Question # 4

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 5

When a body is performing S.H.M., its acceleration is

Question # 6

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 # 7

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

Question # 8

In stationary waves

Question # 9

The velocity of sound in air depends upon

Question # 10

A traveling wave has a shape of:

Question # 11

Transverse waves can be set up:

Question # 12

Longitudinal waves are also called:

Question # 13

The velocity of sound at same temperature is maximum in

Question # 14

Which waves are used in sonography?

Question # 15

Waves transport energy

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The velocity of sound in air not effected by changes in
A. Moisture contents in air
B. Temperature of air
C. The atmosphere pressure
D. The composition of air
2 Shock absorber of the car is an example of
A. resonance
B. forced oscillations
C. interference
D. damped oscillations
3 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
4 If the displacement of a body executing S.H.M is plotted against time, then the curve is known as
A. frequency of S.H.M
B. period of S.H.M
C. wave form
D. none of them
5 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
6 Longitudinal waves are also called:
A. Congressional waves
B. Transverse waves
C. Radio waves
D. None of them
7 transverse wave motion is possible in:
A. Air
B. A mixture of NH3and O2
C. Strings
D. All of these
8 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?
A. 103
B. 106
C. 109
D. 1012
9 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
10 Fluids can transmit:
A. Transverse wave
B. Compressional wave
C. Both of them
D. None of them

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