What does the acronym SONAR stand for?
Q. (i) What does the acronym SONAR stand for?
(ii) What is the audible range of sound for human beings ?
(iii) How do the bats search and catch their prey in dark night?
Ans. (i) Sound Navigation And Ranging
(ii) 20 Hz to 20,000 Hz.
(iii) The high-pitched ultrasonic squeaks of the bat are reflected from the obstacles or prey and returned to the bat’s ear. Such reflections inform the bat where the prey is and what it is like.
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