Sound WavesHard

Question

At which temperature velocity of sound (at 27oC) doubles ?

Options

A.327o C
B.927o C
C.54o C
D.-123o C

Solution

Velocity of sound ∝ √T (where T is tempereture of body in absolute scale).

4 = ⇒ t + 273 = 1200
⇒   t = 927o

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