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प्रश्न
Distinguish between loudness and intensity of sound.
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उत्तर
Intensity of a sound wave is defined as the amount of sound energy passing through a unit area per second. Loudness is a measure of the response of the ear to the sound. The loudness of a sound is defined by its amplitude. The amplitude of a sound decides its intensity, which in turn is perceived by the ear as loudness.
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संबंधित प्रश्न
| Column A | Column B |
| (a) Vibrations cause | (1) absorb sound |
| (b) A shriller sound is | (2) second |
| (c) Unit of frequency | (3) sound |
| (d) Unit of time period | (4) of high pitch |
| (e) Curtains | (5) hertz |
What is sound? What type of waves are sound wave in air?
In an experiment, Anhad studies sound waves. He sets up a loudspeaker to produce sound as shown below :
Anhad adjusts the signal to the loudspeaker to give a sound of frequency 200 Hz.
(a) What happens to the air in-between Anhad and the loudspeaker ?
(b) Explain how Anhad receives sound in both ears.
What causes sound?
The speed of light in air is :
How does the speed of sound depend on (i) Amplitude, and (ii) Wavelength?
Can you hear the sound produced due to the vibrations of second's pendulum?
Rapid back and forth motion of a particle about its mean position is called _____.
Explain the types of mechanical waves.
