A bat flying above a lake emits ultrasonic sound of 100 kHz. When this wave falls on the…
Physics · JEE Advanced · NTA Exams — Oscillations and Waves
A bat flying above a lake emits ultrasonic sound of 100 kHz. When this wave falls on the water surface, it is partly reflected and partly transmitted. The speed of sound in air is 340 ms–1 and in water 1450m/s, Then:
- wavelength of sound in air is 6.8 mm
- wavelength of sound in air is 3.4 mm
- wavelength of sound in water is 14.5 mm
- wavelength of sound in water is 1.45 mm
Answer
(B) wavelength of sound in air is 3.4 mm, (C) wavelength of sound in water is 14.5 mm
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