Physics · 2019
JEE Main · 12 January 2019, Shift 1 · Q2
A person standing on an open ground hears the sound of a jet aeroplane, coming from north at an angle 60^° with ground level. But he finds the…
A person standing on an open ground hears the sound of a jet aeroplane, coming from north at an angle $\displaystyle 60^{\circ}$ with ground level. But he finds the aeroplane right vertically above his position. If $\displaystyle v$ is the speed of sound, speed of the plane is :
Official answer
(2)
$\displaystyle \frac{v}{2}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.