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 frequency of free vibrations is known as

Question # 2

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

Question # 3

A physical system under going forced vibrations is known as

Question # 4

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

Question # 5

The principle of superposition states that

Question # 6

The velocity of sound is greatest in

Question # 7

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

Question # 8

Which waves are used in sonography?

Question # 9

A body is executing free vibrations when it oscilates

Question # 10

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 11

There is no net transfer of energy by particle of medium in

Question # 12

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 # 13

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

Question # 14

A weakly damped system has fairly

Question # 15

Decibel is unit of

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
2 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves
3 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
4 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
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 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
7 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3
8 Transverse waves can be set up:
A. Solids
B. Liquids
C. Gases
D. All of them
9 If a simple pendulum is shifted from karachi to K-2 cliff, its time period
A. remains the same
B. decreases
C. increases
D. none of them
10 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

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