Physics-Wave Motion

NEET Physics Wave Motion MCQ Question

Type: MCQ-numerical-Hard-Class 11

A bat emits ultrasonic sound at a frequency of 1000 kHz in air. What is the wavelength of the transmitted sound when it meets a water surface? (Speed of sound in air is 340 m/s and in water is 1486 m/s.)

A

0.34 mm

B

486 mm

C

0.1486 mm

D

4 mm

Correct Answer

Option B

Detailed Explanation

The wavelength of the transmitted sound in water is given by λ = v/f, where v is the speed of sound in water and f is the frequency. Thus, λ = 1486 m/s / 1,000,000 Hz = 1.486 mm.

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