PrepRung
Sign inSign up free

NDA 2023 GAT · General Knowledge · Sound and Waves · medium

Sound waves of frequency above 20,000 Hz, used by bats to locate objects, are called

Single correct option

Sound waves of frequency above 20,000 Hz, used by bats to locate objects, are called
  1. A. Infrasonic waves
  2. B. Audible waves
  3. C. Seismic waves
  4. D. Ultrasonic waves
Show answer and solution

Answer: (D) Ultrasonic waves

Humans hear roughly 20 Hz to 20 kHz. Frequencies above this range are ultrasonic, which bats and dolphins use for echolocation. Infrasonic waves lie below 20 Hz and are produced, for example, by earthquakes and elephants.
Report a mistake

Original question written in the NDA 2023 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake