8 Two aeroplanes A and B are moving away from one another with a speed of 720 kmph 45 The frequency of the whistle emitted by A

Question

8 Two aeroplanes A and B are moving away from one another with a speed of 720 kmph 45 The frequency of the whistle emitted by A is 1100 Hz The apparent frequency of the whistle as heard by the passenger of the aeroplane B is velocity of sound in air is 350 ms 1 300Hz 2 400Hz 3 500Hz 4 600H 1 A to ec ai 1

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