A train is moving with a constant speed \( 7 \sqrt{2} \mathrm{~m} / \mathrm{s} \) along a circul... VIDEO
A train is moving with a constant speed \( 7 \sqrt{2} \mathrm{~m} / \mathrm{s} \) along a circular track. The length of the
\( \mathrm{P} \) train makes an angle \( 90^{\circ} \) at the centre. A siren
W in its engine is emitting a sound of frequency \( 1.7 \mathrm{kHz} \). The apparent frequency of sound as observed by a passenger at the rear end of the train is :- (Take velocity of sound as \( 333 \mathrm{~m} / \mathrm{s} \) )
(1) \( 1.7 \mathrm{kHz} \)
(2) more than \( 1.7 \mathrm{kHz} \)
(3) less than \( 1.7 \mathrm{kHz} \)
(4) None of these
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