A) 8 m/s (approx.)
B) 800 m/s
C) 7 m/s
D) 6 m/s (approx.)
Correct Answer: A
Solution :
By Doppler?s formula \[n'=\frac{nv}{(v-{{v}_{S}})}\] Since, source is moving towards the listener so \[n'>n\]. If n = 100 then n' = 102.5 Þ \[102.5=\frac{100\times 320}{(320-{{v}_{S}})}\] Þ \[{{v}_{s}}=8\]\[m/\sec \]You need to login to perform this action.
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