An underwater sonar source operating at a frequency of 60 KHz directs – McqOptions

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1.	An underwater sonar source operating at a frequency of 60 KHz directs its beam towards the surface. If the velocity of sound in air is 330 m/s, the wavelength and frequency of waves in air are: [DPMT 2004]
A.	5.5 mm, 60 KHz
B.	330 m, 60 KHz
C.	5.5 mm, 20 KHz
D.	5.5 mm, 80 KHz
Answer» B. 330 m, 60 KHz

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