Multiple choice general knowledge science & technology

Some airplanes is called as supersonic planes because

  1. Speed of the airplane is lesser than the speed of sound

  2. Speed of the airplane is equal to the speed of sound

  3. Speed of the airplane is greater than the speed of sound

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Supersonic aircraft are those that can fly faster than the speed of sound (Mach 1). The term 'supersonic' literally means 'above sound speed', referring to velocities exceeding approximately 1235 km/h at sea level. Subsonic aircraft fly below this speed, while transonic aircraft approach it.

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