Bats can detect small objects such as insects that are of a size approximately that of one wavelength. If bats emit a chirp at a frequency of 50 kHz, and the speed of sound waves in air is 330 m/s, what is the smallest size insect they can detect?

a. 1.5 mm
c. 5.5 mm
b. 3.7 mm
d. 6.6 mm


D

Physics & Space Science

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