NEET Physics Wave Motion MCQ Question with Solution

A bat emits ultrasonic sound of frequency 1000 kHz in air. If the speed of sound in air is 340 m/s, what is the wavelength of this sound in air?

A

0.34 m

B

3.4 m

C

0.034 m

D

34 m

Correct Answer

Option A

Detailed Explanation

The wavelength is calculated using the formula $\lambda = \frac{v}{f}$ , where $v$ is the speed of sound and $f$ is the frequency. Substituting 340 m/s for speed and 1000 kHz (or 1,000,000 Hz) for frequency, we get $\lambda = \frac{340}{1,000,000} = 0.34$ m.

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