When the speed of an object exceeds the speed of sound it is said to be travelling at ________ speed. 

This question was previously asked in
SSC JE CE Previous Paper (Held on 23 Mar 2021 Evening)
View all SSC JE CE Papers >
  1. ultrasonic
  2. supersonic
  3. subsonic
  4. infrasonic

Answer (Detailed Solution Below)

Option 2 : supersonic
Free
Building Materials for All AE/JE Civil Exams Mock Test
15 K Users
20 Questions 20 Marks 20 Mins

Detailed Solution

Download Solution PDF

The correct answer is supersonic.

Key Points

  • CONCEPT:
  • Supersonic speed: An object moving with a speed greater than the speed of sound is said to move with a supersonic speed.
    • Generally, a bullet fired from a gun and aircraft moves with supersonic speed. 
    • The speed of sound is about 768 miles per hour (1,236 kilometers per hour) at sea level.
  • Supersonic speeds are described by their "Mach number".

Important Points

  • Mach number: The ratio of the speed of the object to the speed of sound in the air of the same temperature and density is called Mach number.
    • Supersonic includes speeds up to five times faster than the speed of sound, or Mach 5.
  • EXPLANATION:

    • When the speed of any object exceeds the speed of sound, it is said to be traveling at Supersonic speed. So option 2 is correct.
  • EXTRA POINTS:

    • Subsonic has a speed of less than 0.8 Mach.
    • Hypersonic may have a speed between 5-10 Mach.
Latest SSC JE CE Updates

Last updated on May 28, 2025

-> SSC JE notification 2025 for Civil Engineering will be released on June 30. 

-> Candidates can fill the SSC JE CE application from June 30 to July 21.

-> The selection process of the candidates for the SSC Junior Engineer post consists of Paper I, Paper II, Document Verification, and Medical Examination.

-> Candidates who will get selected will get a salary range between Rs. 35,400/- to Rs. 1,12,400/-.

-> Candidates must refer to the SSC JE Previous Year Papers and SSC JE Civil Mock Test, SSC JE Electrical Mock Test, and SSC JE Mechanical Mock Test to understand the type of questions coming in the examination.

-> The Staff Selection Commission conducts the SSC JE exam to recruit Junior Engineers in different disciplines under various departments of the Central Government.

Get Free Access Now
Hot Links: teen patti casino download teen patti real cash 2024 online teen patti real money teen patti circle