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प्रश्न
Decibel is the unit of pitch of a sound.
विकल्प
True
False
उत्तर
False.
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संबंधित प्रश्न
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.
If the amplitude of a wave is doubled, what will be the effect on its loudness?
Two musical notes of the same pitch and same loudness are played on two different instruments. Their wave patterns are as shown in figure.
How do they differ in
(a) loudness,
(b) pitch and
(c) quality
State three factors on which loundess of sound heard by a listener depends.
Name musical instrument, one in each case, which produces its notes by using the following. In each case state the method used to produce notes of different pitches and loudness.
(a) A vibrating string.
(b) A vibrating column air.
(c) Vibration of any other body.
Draw a diagram to show the waveforms of a pure note and a musical note, of the same pitch and same loudness.
What is acoustics?
