Three persons P_(1), P_(2) and P_(3) are at different points A, B and C,as shown in the figure.P_(1) and P_(2) clap at the same time.For P_(3) to hear two distinct claps, the minimum distance betweenl P_(1) and P_(2) should be ______ m. (The velocity of sound in air is 330 ms^(-1))

Three persons P_(1), P_(2) and P_(3) are at different points A, B and

1.	Three persons P_(1), P_(2) and P_(3) are at different points A, B and C,as shown in the figure.P_(1) and P_(2) clap at the same time.For P_(3) to hear two distinct claps, the minimum distance betweenl P_(1) and P_(2) should be ______ m. (The velocity of sound in air is 330 ms^(-1))
Answer» 33 330 363 660 Solution :Human ear can hear two sounds separately only if they reach the ear after an INTERVAL of 1/10 of a second. So, the time taken by the sound from `P_(1)` to `P_(2)` should be GREATER than `1//10 s = 0.1 s.` The distance between `P_(1)` and `P_(2)` `= v XX t = 330 xx 0.1 = 33 m.`