The wavelength of sound in air is 10 cm. its frequency is, (Given velo – McqOptions

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1.	The wavelength of sound in air is 10 cm. its frequency is, (Given velocity of sound = 330 m/s) ?
A.	330 cycles per second
B.	3.3 kilo cycles per second
C.	30 mega-cycles per second
D.	3 × 105 cycles per second
Answer» C. 30 mega-cycles per second

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