Question

A jet plane files through air with a velocity of 2 Mach. While the velocity of sound is 332 m/s the air speed of the plane is:; 1) 66.4 km/s; 2) 166 m/s; 3) 664 m/s; 4) 332 m/s

Answer 1

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A jet plane files through air with a velocity of 2 Mach. While the velocity of sound is 332 m/s the air speed of the plane is: 166 m/s

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Answer 2

hey mate here is your answer

Mach 1 means the speed of sound

Mach 2 means twice the speed of sound

i.e 332×2 = 664 m/sec 

hence option (3) 664 is correct

hope it will help you

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