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A small source of sound moves on a circle of radius r with constant speed V_s. eta is the actual frequencyof the source.For thepositionsof the source indicated in the figure find the frequency as heard by three observers at the points P,O & Q respectively |
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Answer» <P> Solution :Here, `eta_1=eta{V/(V-V_s cos theta)}`(a) At P `theta=pi//4 "" therefore eta_0=eta{V/(V-(V_s//sqrt2))}` (B)At O `theta=pi//2 "" therefore eta_0=eta ` (c ) At S `theta=(3pi//4) "" thereforeeta_Q=eta {V/(V+(V_s//sqrt2))}` |
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