Question # 1

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

Choose an answer

Longitudinal wave

Transverse wave

Progressive wave

Stationary wave

The damping depends upon the

Choose an answer

amplitude

sharpness

both of them

none of them

Mechanical waves on the surface of a liquid are

Choose an answer

Transverse

Longitudinal

Torsional

both transverse and longitudinal

The natural frequency of a pendulum which is vibrating freely, depends upon its

Choose an answer

mass

length

material

all of them

The expression of Hook's law is

Choose an answer

F=ma

F=kx

F= -kx

-kx=ma

In stationary waves

Choose an answer

Energy is uniformly distributed

Energy is minimum at nodes and maximum at antinodes

Energy is maximum at nodes and minimum at antidotes

Alternating maximum and minimum energy producing at nodes and antinodes

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

Choose an answer

remains the same

decreases

increases

none of them

If we increase the length of a simple pendulum four times, its time period will become

Choose an answer

2 times

3 times

4 times

6 times

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Choose an answer

Frequency of beat changes with time

Frequency of beat changes with location of observer

All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves

Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves

The time required to complete on vibration is called

Choose an answer

frequency

total time

time period

velocity

Acceleration of the mass at any instant is given by

Choose an answer

a=k/m x

a= - m/k x

a = - k/m x

a=m/k x

Which of the following is not mechanical wave?

Choose an answer

Sound wave

Light wave

wave produced in spring

None of them

At 'resonance' the transfer of energy from deriving source to the oscillator is

Choose an answer

maximum

minimum

zero

none of them

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Choose an answer

Increasing by a factor of 2

Decreasing by a factor of 2

Decreasing by a factor of 4

Unchanged

Such oscillations in which the amplitude decreases steadily with time, are called

Choose an answer

resonance

force oscillations

large oscillations

damped oscillations

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Choose an answer

60°

90°

120°

180°

The distance covered by the wave in one second is:

Choose an answer

Wave number

Wave length

Frequency

Wave speed

Energy is not carried by

Choose an answer

Transverse progressive waves

Longitudinal vibration

Stationary waves

Electromagnetic

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

Choose an answer

e.m. waves

mechanical waves

sound waves

water waves

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

Choose an answer

displacement

vibration

a complete motion

an acceleration

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

Choose an answer

Cannot be diffracted

Cannot be polarized

Have a lower frequency

Are deviated when they pass through a magnetic field

The temperature at which the speed of sound becomes double as was at 27°C is

Choose an answer

273°C

0°C

927°C

1027°C

To hear a clear echo, the reflecting surface must be at a minimum distance of

Choose an answer

10 m

16.5 m

33 m

66 m

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Choose an answer

Rope

Coil of spring

Water

All of them

Time period of a simple pendulum depends upon the

Choose an answer

length of the pendulum

acceleration due to gravity

none of them

both of them

The frequency of free vibrations is known as

Choose an answer

free frequency

forced frequency

natural frequency

un-natural frequency

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Choose an answer

400 m/sec

40 m/sec

430 m/sec

300 m/sec

Angular frequency 'w' is basically a characteristics of

Choose an answer

linear motion

circular motion

both of them

none of them

The vibratory or oscillatory motion of a body is

Choose an answer

translatory motion

back and forth motion about its mean position

free all motion

circular motion

In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is

Choose an answer

Same

2 times

4 times

8 times

When the bob of simple pendulum is at extreme position, its K.E. will be

Choose an answer

maximum

minimum

zero

all of them

More Classes

Other Links

ECAT Pre General Science Physics Chapter 8 Waves Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer