Oscillations and Waves: JEE Main 2015 Physics question

JEE Main 2015 · Session, Shift 1 · Q8517

JEE Main 2015Session, Shift 1PhysicsMediumOscillations and Waves185× since 2002

A train is moving on a straight track with speed

20\,m{s^{ - 1}}.

It is blowing its whistle at the frequency of

1000

Hz

. The percentage change in the frequency heard by a person standing near the track as the train passes him is (speed of sound

= 320\,m{s^{ - 1}}

) close to :

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JEE Main 2015 Oscillations and Waves Question with Solution (Session Shift 1, Q8517) | JEE Arc