Physics · 2009
NEET 2009 · Prelims · Code A · Q19
The driver of a car travelling with speed 30 m/sec towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is 330 m/s, the…
The driver of a car travelling with speed $\displaystyle 30$ m/sec towards a hill sounds a horn of frequency $\displaystyle 600$ Hz. If the velocity of sound in air is $\displaystyle 330$ m/s, the frequency of reflected sound as heard by driver is :
Official answer
(4)
$\displaystyle 720$ Hz
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NEET (UG) 2009 Physics question, with the answer from NTA’s final answer key. Where our answers come from.