RRB JE Stage I Exam 26 May 2019 Shift 1

Question : 66 of 100

Marks: +1, -0

An aeroplane is moving at a constant altitude 'h'. At 10:00 AM, it is seen at an elevation of 30°. 1 minute later, it is observed at an elevation of 60°. If the speed of the plane is 960 km/h, then find 'h'.