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प्रश्न
Two waves of the same pitch have their amplitudes in the ratio 2 : 3.
(i) What will be the ratio of their loudness?
(ii) What will be the ratio of their frequencies?
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उत्तर
(i) Given, the Amplitude ratio, a1 : a2 = 2 : 3
∵ I α a2
∴ `"I"_1/"I"_2="a"_1^2/"a"_2^2=2^2/3^2=4/9`
⇒ I1 : I2 = 4 : 9
(ii) ∵ Frequency α Pitch
∴ Ratio of frequencies = 1 : 1
संबंधित प्रश्न
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(c) a shrill note.
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Name the factors which determine the quality of a note.
The frequency of the stretched string of a fixed length is f when it is plucked in the middle. Where should it be plucked so that string vibrates with frequency (i) 2f, (ii) 3f?
Draw diagrams to show these vibrations and name them.
