A wavelength 0.60 cm is produced in air and it travels at a speed of 300 ms–1. It will be an 

(1) Audible wave

(2) Infrasonic wave

(3) Ultrasonic wave

(4) None of the above

(3) n=vλ=3000.6×102Hz=36×104Hz=50,000Hz

⇒ Wave is ultrasonic.

Difficulty Level:

  • 35%
  • 21%
  • 40%
  • 5%