When speed of an object exceeds the velocity of sound, Then it is said to be moving with ______ speed.

Options

A. A)Subsonic Speed
B. B)Supersonic speed
C. C)Ultrasonic Speed
D. D)1 Mach speed

Answer

B

Explanation

Mach number(m) `=("Object speed")/("speed of sound")`
If ` m lt1` it is subsonic
m=1 transonic
`mgt1` supersonic
`mgt5` hypersonic