Two aeroplanes are approaching each other and their velocities are 160 and 240 kilometres per hour. The frequency of the note emitted by the first as heard by the passengers in the other is 1000 Hz. Calculate the true frequency of the note as heard by its own passengers. (Velocity of sound = 1200 kmph)

Two aeroplanes are approaching each other and their velocities are 160

1.	Two aeroplanes are approaching each other and their velocities are 160 and 240 kilometres per hour. The frequency of the note emitted by the first as heard by the passengers in the other is 1000 Hz. Calculate the true frequency of the note as heard by its own passengers. (Velocity of sound = 1200 kmph)
Answer» ANSWER :722.2 HZ