Physics · 2019
JEE Main · 10 April 2019, Shift 1 · Q13
A stationary source emits sound waves of frequency 500 Hz. Two observers moving along a line passing through the source detect sound to be of…
A stationary source emits sound waves of frequency $\displaystyle 500$ Hz. Two observers moving along a line passing through the source detect sound to be of frequencies $\displaystyle 480$ Hz and $\displaystyle 530$ Hz. Their respective speeds are, in $\displaystyle \mathrm{ms}^{-1}$,
(Given speed of sound $\displaystyle =300 \mathrm{~m} / \mathrm{s}$ )
Official answer
(1)
$\displaystyle 12, 18$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.