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प्रश्न
What is the noise? Give an example.
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उत्तर
Noise is a harsh and unpleasant sound produced by a body making a succession of irregular and discontinuous disturbances, e.g., a sound produced by a stone thrown on a thin sheet, the thunder of lightning, etc.
संबंधित प्रश्न
A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.
Name the factor that determines Pitch of the note.
A person is standing at the seashore. An observer on the ship which is anchored in between a vertical cliff and the person on the shore fires a gun. The person on the shore hears two sounds, 2 seconds and 3 seconds after seeing the smoke of the fired gun. If the speed of sound in the air is 320 ms-1 then calculate:
1) the distance between the observer on the ship and the person on the shore.
2) the distance between the cliff and the observer on the ship.
How does sound travel in air?
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of loudness?
Two identical guitars are played by two persons to give notes of the same pitch. Will they differ in quality? Give a reason for your answer.
A man playing a flute is able to produce notes of different frequencies. If he closes the holes near his mouth, will the pitch of the note produced, increase or decrease? Give a reason.
Name the factors which determine the quality of a note.
Give a scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
