A whistle producing sound waves of frequencies … … and above is approaching a stationary person with speed … … The velocity of sound in air is … If the person can hear frequencies upto a maximum of … … the maximum value of … upto which he can hear whistle is

Waves

JEE Main 2006 · Annual, Paper 1 · Q8515

PhysicsMedium85×since 2002Q8515

A whistle producing sound waves of frequencies

9500

Hz

and above is approaching a stationary person with speed

v

m{s^{ - 1}}.

The velocity of sound in air is

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

If the person can hear frequencies upto a maximum of

10,000

HZ,

the maximum value of

v

upto which he can hear whistle is