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

Question # 2

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

Question # 3

transverse wave motion is possible in:

Question # 4

Ultra-violet rays differ from X-rays in that they

Question # 5

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 6

SI unit of wave length is:

Question # 7

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 # 8

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Question # 9

The velocity of sound in air not effected by changes in

Question # 10

Which waves are used in sonography?

Question # 11

One complete round trip of the body about its mean position is called

Question # 12

Velocity of sound in vacuum (in m/s) is

Question # 13

Which one of the following wave motions is transverse:

Question # 14

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 15

Two sources of sound are said to be coherent if

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:
A. kg
B. kg-meter
C. kg/meter
D. Meter/kg
2 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
3 The bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
4 The temperature at which the speed of sound becomes double as was at 27°C is
A. 273°C
B. 0°C
C. 927°C
D. 1027°C
5 Which of the following is an example of a S.H.M?
A. motion of a projectile
B. motion of a train along a circular path
C. motion of swing
D. electrons revolving sound the nucleus
6 Time period of simple pendulum is independent of
A. length
B. mass
C. acceleration due to gravity
D. none of them
7 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
8 The characteristic of a body executing S.H.M is that its acceleration is
A. inversely proportional to displacement
B. directly proportional to displacement
C. independent of displacement
D. equal to zero
9 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
10 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3

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