Two aeroplanes A and B are approaching each other and their velocities are `108 kmh^(-1)` and
Channel: Doubtnut
Date: 2020-08-30

Two aeroplanes A and B are approaching each other and their velocities are `108 kmh^(-1)` and `144 kmh^(-1)` respectively. The frequency of a note emitted by A as heard by the passangers in B is 1170 Hz. Calculate the frequency of the note heard by the passangers in A. Velocity of sound `= 350 ms^(-1)`.