A source of frequency 150 Hz is moving in the direction of a pers… - Vidyadip

MCQ

A source of frequency $150 Hz$ is moving in the direction of a person with a velocity of $110\, m/s$. The frequency heard by the person will be .... $Hz$ (speed of sound in medium $= 330 m/s$)

✓
$225$
B
$200$
C
$150$
D
$100$

✓

Answer

Correct option: A.

$225$

a
(a) $n' = \frac{v}{{v - {v_s}}} \times n = \left( {\frac{{330}}{{330 - 110}}} \right) \times 150 = 225\,Hz$

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