Bats Can Detect Small Objects Such as Insects That Are

question 47

Multiple Choice

Bats can detect small objects such as insects that are of a size in the order of a wavelength. If bats emit a chirp at a frequency of 60 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
• B)3.5 mm
• C)5.5 mm
• D)7.5 mm
• E)9.8 mm

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