Bats detect obstacles in their path by receiving the reflected
Infrasonic waves
Ultrasonic waves
Radio waves
Microwaves
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Answer is Wrong!
This question was previously asked in
UPSC NDA-2 – 2017
Bats use a process called echolocation to navigate and find prey in the dark. They emit high-frequency sound waves, which are beyond the range of human hearing (ultrasonic waves). These waves reflect off objects in their path, and the bat detects the returning echoes, interpreting them to build a ‘sound map’ of their surroundings, thus detecting obstacles and prey.