MHT CET 2026 Mathematics question
An aeroplane at an altitude of 1 km is flying horizontally at 600 km / hry passes directly over an observer. Then the rate at which it is approaching the observer when it is 1250 meters away from him is….
Answer: (A)
Solution
Let the horizontal distance from the observer be km and the straight-line distance be km. Then , so . When km, km, and km/h (magnitude). So
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