A band playing music at a frequency `f` is moving towards a wall at a speed `v_(b)`. A motorist is following the band with a speed `v_(m)`. If the speed of sound, obtain an expression for the beat frequency heard by the motorist.

A band playing music at a frequency f is moving towards a wall at a speed v_(b) . A motorist is following the band with a speed v_(m) . If v is the speed of sound, obtain an expression for the beat frequency heard by the motorist.

A band playing music at a frequency f is moving towards a wall at a speed v_(b) . A motorist is following the band with a speed v_(m) . If v is the speed of sound, obtain an expression for the beat frequency heard by the motorist.

A band playing music at a frequency f is moving towards a wall at a speed v_(b) . A motorist is following the band with a speed v_(m) . If v is the speed of sound, obtain an expression for the beat frequency heard by the motorist.

A band playing music at a frequency f is moving towards a wall at a speed v_h . A motorist is following the band with a speed v_m . If v is the speed of sound, the expression for the beat frequency heard by the motorist is (n(V+V_m)V_b)/((V^2 - V_b^2)) . Then n