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A car playing music at a frequency of 25...

A car playing music at a frequency of 250 Hz moves at 20 m/s . towards an observer. What frequency the observer can hear when (i) it approaches and (ii) when it passes by?

A

approaching : `250 xx ((v+ 20)/v)`,
leaving : `250 xx((v-20)/v)`

B

approaching , `250 xx (v/(v+20))`,
leaving : `250 xx (v/(v-20))`

C

approaching : ` 250xx((v-20)/v)`,
leaving : `250 xx ((v + 20)/v)`

D

approaching : `250 xx (v/(v-20))` ,
leaving : `250 xx (v/(v+20))`

Text Solution

Verified by Experts

The correct Answer is:
D
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