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प्रश्न
Decibel is the unit of pitch of a sound.
पर्याय
True
False
उत्तर
False.
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संबंधित प्रश्न
Name one property of waves that do not change when the wave passes from one medium to another.
Name three characteristics of a musical sound.
State the factors that determine
(a) the pitch of a note.
(b) the loudness of the sound heard.
(c) the quality of the note.
Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their (i) loudness, and (ii) pitch
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of loudness?
Give scientific reason for the following:
When a nail is hammering appears to get higher and higher in pitch.
Name one main factor on which each character such as intensity, pitch, and quality of musical sound depends.
What is meant by the ‘loudness’ of a sound? How is it related to the intensity?
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
Give scientific reasons.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
