Which wave property determines (a) loudness, (b) pitch?

(a) Amplitude (b) Frequency

(a) The loudness of a sound depends on its amplitude. If the amplitude of a sound is large, then the sound produced will also be loud.

(b) The pitch of a sound depends on its frequency. A sound will be considered a high pitched sound, if its frequency is high.

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Chapter 8: Propagation of Sound Waves - Exercise

Chapter 8 Propagation of Sound Waves
Exercise | Q 1

Why are sound waves called mechanical waves?

What is loudness of sound? What factors does it depend on?

Select the correct alternative :

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What do you mean by a vibratory motion?

How is it possible to recognize a person by his voice without seeing him?

What causes sound?

Draw a displacement-distance graph of a wave and mark on it, the amplitude of wave by the letter 'a' and wavelength of wave by the letter λ.

Arrange the speed of sound in gases V_g, solids V_s and liquids V_Lin an ascending order.

Select the correct option:

If the frequency of a wave is 25 Hz. the total number of compressions and rarefactions passing through a point in 1 second is :