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General
Easy
Question
An aeroplane is going towards east at a speed of 510 kmph at a height of 2000m. At a certain instant, the sound of the plane heard by a ground observer appears to come from a point vertically above him. Where is the aeroplane at this instant ?speed of sound in air = 
)
- 338 m
- 833 m
- 383 m
- 333 m
The correct answer is: 333 m
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