NDA 2017 Physics question

The speed of a body that has Mach number more than 1 is

(A)supersonicCorrect
(B)subsonic
(C)300 m/s
(D)about 10 m/s

Answer: (A)

Solution

The Mach number is the ratio of the speed of a body to the speed of sound in the same medium. A Mach number greater than 1 means the body is travelling faster than

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Question ID VK-030696