Physics PYQ 113 of 288 · Waves

SONAR technology uses –

  1. AX-rays
  2. BInfrared waves
  3. CMicrowaves
  4. DNone of the above

BPSC BAO 2024

Show answer and explanation

Correct answer: (d) None of the above

Explanation

SONAR (Sound Navigation and Ranging) sends out ultrasonic sound waves (above 20 kHz) and times their echoes to find the depth of the sea or underwater objects.

It uses none of X-rays, infrared waves or microwaves, so the answer is "None of the above".

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