Question # 1

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Choose an answer

45°

90°

135°

180°

The expression of Hook's law is

Choose an answer

F=ma

F=kx

F= -kx

-kx=ma

The distance covered by the wave in one second is:

Choose an answer

Wave number

Wave length

Frequency

Wave speed

The waves produced in a microwave oven have frequency

Choose an answer

2450 Hz

2450 K Hz

2450 M Hz

2450 G Hz

A swing has

Choose an answer

one natural frequency

two natural frequencies

three natural frequencies

four natural frequencies

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

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

A body is executing free vibrations when it oscilates

Choose an answer

with the interference of an external force

without the interference of an external force

with the interference of an internal force

none of them

Shock absorber of the car is an example of

Choose an answer

resonance

forced oscillations

interference

damped oscillations

A traveling wave has a shape of:

Choose an answer

Square wave

Sine wave

Parabola

hyperbola

Two sources of sound are said to be coherent if

Choose an answer

The produce sounds of equal intensity

They produce sounds of equal frequency

They produce sound waves vibrating with the same phase

They produce sound waves with zero or constant phase difference all instant of time

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Choose an answer

Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Choose an answer

360 m/s

306 m/s

331 m/s

340 ms

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

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Choose an answer

Longitudinal waves

Transverse waves

Water waves

Complex waves

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

More Classes

Other Links

Physics ECAT Pre Engineering 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