A source of sound moves along a circle of radius
\( 2 \mathrm{~m} \) with constant angular veloc... VIDEO
A source of sound moves along a circle of radius
\( 2 \mathrm{~m} \) with constant angular velocity \( 40 \mathrm{radian} / \mathrm{s} \).
Frequency of the source is \( 300 \mathrm{~Hz} \). A detector is
\( P \)
kept of some distance from the circle in the same
W
plane of the circle (as shown in figure). Which of
the following is not the possible value of
frequency registered by the detector ? (Speed of
sound \( =320 \mathrm{~m} / \mathrm{s}) \)
(1) \( 250 \mathrm{~Hz} \)
(2) \( 360 \mathrm{~Hz} \)
(3) \( 396 \mathrm{~Hz} \)
(4) \( 220 \mathrm{~Hz} \)
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