Question:-
A supersonic aircraft is ascending at an angle of 30° to the horizontal. When an observer at the ground hears its sound, the aircraft is at an elevation of 60° to the horizontal. The flight mach number of the aircraft is

Option (A)
2/Ö3
Option (B)
Ö3/2
Option(C)
1/2
Option(D)
2
Correct Option:
(A)
Question Solution:
a = sin-1(1/Ma) Þ 60 = (1/Ma)
\ Ma = (2/Ö3)
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