Question # 1

Smaller the damping, greater will be the

Choose an answer

frequency

wavelength

amplitude

none of them

In case of mechanical waves, we study the motion of

Choose an answer

a single particle

collection of particle

any one of them

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

In the same medium, velocity of the wave:

Choose an answer

Goes on increasing

Remains constant

Goes on decreasing

None of these

Laplace formula is derived from

Choose an answer

Isothermal change

Adiabatic change

Isobaric change

None of these

If the length of second pendulum becomes four times then its time period will become

Choose an answer

Four time

Two times

Six times

Eight times

The time period of pendulums of different lengths would be

Choose an answer

same

different

both of them

none of them

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

The wave motion set up in any medium depends upon:

Choose an answer

Elasticity

Inertia

Density

All of these

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

Choose an answer

e.m. waves

mechanical waves

light waves

microwaves

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

Choose an answer

its weight

tension in the string

viscous drag force by air

all of them

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

Choose an answer

1 MHz

10 Hz

1 GHz

100000 Hz

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

Choose an answer

applied force

momentum

restoring force

none of them

The force which opposes the applied force producing the displacement in the spring is called

Choose an answer

restoring force

periodic force

centripetal force

resistive force

Si units of time period is

Choose an answer

second

hertz

revolution

vibration/sec

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 the time period a simple pendulum is 2 s, its frequency would be

Choose an answer

2 Hz

1.5 Hz

1.0 Hz

0.5 Hz

Which one of the following wave motions is transverse:

Choose an answer

Wave motion produced in water when a piece of stone is thrown into it

Pulling of weight hanging vertically with a spiral spring

Both of these

None of these

Smaller the damping, the resonance will be

Choose an answer

more flat

more sharp

both of them

none of them

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

If a freely oscillating system is subjected to an external force, then

Choose an answer

free vibrations will take place

the body will move with its natural frequency

forced vibrations will take place

none of them

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

Choose an answer

In circles

Perpendicular to the direction of level

Parallel to the direction of level

None of these

The square of 0.4 is:

Choose an answer

Greater than 0.4

Smaller than 0.4

Equal to 0.4

None of them

Which of the following is not mechanical wave?

Choose an answer

Sound wave

Light wave

wave produced in spring

None of them

The process in which energy is dissipated from the oscillating system is known as

Choose an answer

resonance

interference

diffraction

damping

The velocity of sound in air not effected by changes in

Choose an answer

Moisture contents in air

Temperature of air

The atmosphere pressure

The composition of air

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?

Choose an answer

10³

10⁶

10⁹

10¹²

When a wave is travels from one place to another, it transfers:

Choose an answer

Matter

Energy

Momentum

Both B and C

When an oscillatory motion repeats itself, then this type of motion is called

Choose an answer

vibratory motion

constant motion

fixed motion

periodic motion

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

Choose an answer

Longitudinal wave

Transverse wave

Progressive wave

Stationary wave

The weight 'mg' of the bob is resolved into

Choose an answer

one component

two components

three components

four components

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