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A sound wave of frequency 500 Hz cobers ...

A sound wave of frequency `500 Hz` cobers a distance of 1000 m in 5 s between the points X and Y. The number of waves between X and Y is :

A

500

B

1000

C

2500

D

5000

Text Solution

Verified by Experts

The correct Answer is:
C
Number of waves emitted in `5 s = 500 xx 5 = 2500`
Aliter `v = (1000m)/(5 s) = 200 m//s, v = 500 Hz` `lamda = (v)/(v) = (200 m//s)/(500 Hz) = (2)/(5) m`
Number of waves in `1000 m = (1000 m)/((2//5) m) = 2500`.
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