Sound: A type of energy made by vibrations

This is an MCQ-based quiz on Sound.

This includes Longitudinal wave, Transverse wave, and Electromagnetic wave

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The sound can travel in air when:

Particles of medium travel from one place to another There is no moisture in the atmosphere Disturbance travel from one place to another Both particles as well as disturbance travel from one place to another

The echo-receiver of a sonar attached to a ship, receives the echo from the bottom of sea 4 seconds after the ultrasonic waves were sent into the sea. If the speed of sound in water is 1500 m/s, then what is the depth of the sea?

6000 m 3000 m 15000 m 3500 m

Before the main shock waves, the earthquake produces the characteristic sound waves which some animals like rhinoceros can hear. Can you guess the kind of sound waves produced here?

Infrasonic sounds Ultrasonic sounds Audible Sounds None of these

On increasing the temperature, the speed of sound in air:

Increases Decreases Does not change First increases then becomes constant

We can easily distinguish between the sounds of the different singers even without having seen them. This is all due the different quality or timber of their sounds. On what factor does the quality of sound depend?

Wavelength Waveform Wave frequency Wave amplitude

When we change feeble sound to loud sound we increase its

frequency amplitude velocity wavelength

A key of a mechanical piano struck gently and then struck again but mush harder this time. In the second case

Sound will be louder but pitch will not be different

Sound will be louder and pitch will also be higher

Sound will be louder but pitch will be lower

Both loudness and pitch will remain unaffected

Our ears are sensitive to sound frequencies between:

20 Hz to 20 kHz 2 Hz to 20 Hz 20 kHz to 200 kHz 2000 kHz to 20000 kHz

Which of the following waves are produced by bats?

Infrasonic waves Ultrasonic waves Audible waves All of these

Maximum tolerable sound is:

0 dB 10 dB 60 dB 120 dB

The persistence of sound in an auditorium is the result of repeated reflections of sound and is called:

Reverberation

Audible

Distinct sound

Reflection

Sound waves in the air are an example of………….

Longitudinal wave

Transverse wave

Electromagnetic wave

None of the options

Before playing the orchestra in a musical concert, a sitarist tries to adjust the tension and pluck the string suitably. By doing so, he is adjusting

Intensity of sound only Amplitude of sound only Frequency of the sitar string with the frequency of other musical instruments Loudness of sound

Infrasound can be heard by

Dog Bat Rhinoceros Human beings

In SONAR, we use

Ultrasonic waves

Infrasonic waves

Radio waves

Audible sound waves

Earthquake produces which kind of sound before the main shock wave begins

Ultrasound

Infrasound

Audible sound

None of the above

In order to reduce the loudness of a sound, we have to:

Decrease its frequency of vibration of the sound. Increase its frequency of vibration of the sound. Decrease its amplitude of vibration of the sound. Increase its amplitude of vibration of the sound.

Note is a sound

Of mixture of several frequencies

Of mixture of two frequencies only

Of a single frequency

Always unpleasant to listen

Quiz/Test Summary

Title: Sound: A type of energy made by vibrations

Questions: 18

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