Physics · 2015
NEET 2015 · 25 July · Code C · Q40
A source of sound S emitting waves of frequency 100 Hz and an observer O are located at some distance from each other. The source is moving with a…
A source of sound S emitting waves of frequency $\displaystyle 100$ Hz and an observer O are located at some distance from each other. The source is moving with a speed of $\displaystyle 19.4 \mathrm{~ms}^{-1}$ at an angle of $\displaystyle 60$° with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air $\displaystyle 330 \mathrm{~ms}^{-1}$), is :
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 103$ Hz
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NEET (UG) 2015 Physics question, with the answer from NTA’s final answer key. Where our answers come from.