The wavelength of sound in air is 5 cm. Its frequency is
a] 6.6 kilo cycles per second
(B) 660 cycles per second
(C) 6.6 mega cycles per second
(D) 109 cycles per second
a) 6.6 kilo cycles per second
frequency= speed/ wavelength= 330ms-1 / 0.05m = 6600 hz
frequency= speed/ wavelength= 330ms-1 / 0.05m = 6600 hz