Question

A bat flying above a take emits ultrasonic sound of 100 kHz. When this wave falls on the water surface, it is partly reflected and partly transmitted. What are the wavelengths of the reflected and transmitted waves? The speed of sound in air is 340 ms –1 and in water 1450 ms–1

Solution

Correct option is

3.4 mm and 1.45 cm

 

Frequency of sound (V) = 100 kHz = 105 Hz   

Speed of sound in air   

Speed of sound in water   

Since the reflected wave travels in air, its wavelength is 

                      

Since the transmitted wave travels in water, its wavelengths is

                   

SIMILAR QUESTIONS

Q1

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Q2

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Q4

 

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Q5

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Q6

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Q7

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Q8

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Q10

 

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