Question # 1

The waves which propagate through the oscillations of material particles are known as:

Choose an answer

Mechanical waves

Electromagnetic waves

Any of them

None of them

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Choose an answer

kg

kg-meter

kg/meter

Meter/kg

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

Choose an answer

resonance

interference

diffraction

damping

SI unit of frequency is

Choose an answer

second

hertz

revolution

vibrations/sec

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°

Which waves are used in sonography?

Choose an answer

Microwaves

Infra red waved

Sound waves

Ultrasonic waves

Si units of time period is

Choose an answer

second

hertz

revolution

vibration/sec

For a body executing S. H. M, its

Choose an answer

momentum remains constant

potential energy remains constant

kinetic energy remains constant

total energy remains constant

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

While describing the motion of a simple pendulum, the frictional effects are

Choose an answer

taken into account

completely ignored

partially ignored

none of them

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

The loudness and pitch of a sound note depends on

Choose an answer

Intensity and velocity

Frequency and velocity

Intensity and frequency

Frequency and number of harmonic

Fluids can transmit:

Choose an answer

Transverse wave

Compressional wave

Both of them

None of them

Which type of wave can be set up in solids

Choose an answer

longitudinal waves

transverse waves

both of them

none of them

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Choose an answer

2 m

1 m

0.5 m

4 m

Laplace formula is derived from

Choose an answer

Isothermal change

Adiabatic change

Isobaric change

None of these

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

Choose an answer

inversely proportional to the displacement

directly proportional to the applied force

directly proportional to the amplitude

directly proportional to the displacement but in opposite direction

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

Choose an answer

longitudinal waves

transverse waves

non-mechanical waves

none of them

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

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

Choose an answer

1 Nm^-1

2 Nm^-1

3 Nm^-1

4 Nm^-1

Which of the following is not mechanical wave?

Choose an answer

Sound wave

Light wave

wave produced in spring

None of them

A second's pendulum is a pendulum whose time period is

Choose an answer

1 second

2 seconds

3 seconds

4 seconds

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

Mechanical waves on the surface of a liquid are

Choose an answer

Transverse

Longitudinal

Torsional

both transverse and longitudinal

For transmission of both transverse and longitudinal waves, we can use:

Choose an answer

Solid

Gas

Plasma

None of these

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

The velocity of sound at same temperature is maximum in

Choose an answer

H₂

N₂

O₂

NH₃

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

Choose an answer

Stationary waves

Transverse waves

Both of these

None of these

In the resonance condition, the amplitude of the oscillator becomes

Choose an answer

very large

very small

zero

any one of them

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

Choose an answer

displacement

vibration

a complete motion

an acceleration

The portion of the water above its mean level forms a:

Choose an answer

Crest

Trough

Both A and B

None of these

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