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For the wave shown in the figure, the fr...

For the wave shown in the figure, the frequency and wavelength if its speed is 320 m/s are

A

8 cm, 400 Hz

B

80 cm, 40 Hz

C

8 cm, 4000 Hz

D

40 cm, 8000 Hz

Text Solution

Verified by Experts

The correct Answer is:
C
`2.5 lamda = 20 " " :. lamda = (20)/(2.5) = 8 cm`
`n = (v)/(lamda)`
`= (320)/(8 xx 10^(-2)) = 4000 Hz`
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