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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 17 - Sound Waves > A point source emits sound equally in all directions in a non-absorbing medium. Two point P and Q are at distance of 9 m and 25 m respectively from the source. The ratio of the amplitude of the waves at P and Q is :

A point source emits sound equally in all directions in a non-absorbing medium. Two point P and Q are at distance of 9 m and 25 m respectively from the source. The ratio of the amplitude of the waves at P and Q is :

The temperature at which speed of sound in air becomes double its value at 0 degree C is