A source of sound of frequency 450 cycles/sec is moving towards a… - Vidyadip

MCQ

A source of sound of frequency $450$ cycles/sec is moving towards a stationary observer with $34\, m/sec$ speed. If the speed of sound is $340\, m/sec,$ then the apparent frequency will be ..... $cycles/sec$

A
$410$
✓
$500$
C
$550$
D
$450$

✓

Answer

Correct option: B.

$500$

b
(b) $n' = n\,\left( {\frac{v}{{v - {v_0}}}} \right) = 450\,\left( {\frac{{340}}{{340 - 34}}} \right) = 500$ $cycles/\sec $

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