A bat is flitting about in a cave, navigating via ultrasonic beeps. Assume that the sound
Channel: Doubtnut
Date: 2020-08-02

A bat is flitting about in a cave, navigating via ultrasonic beeps. Assume that the sound emission frequency of the bat is 40kHz. During one fast swoop directly toward a flat wall surface. The bat is moving at 0.03 times the speed of sound in air. What frequency does the bat hear reflected off the wall ?