What should be the minimum distance between the source and reflector in water so that the echo is heard distinctly? (The speed of sound in water = 1400 ms^-1).
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What should be the minimum distance between the source and reflector in water so that the echo is heard distinctly? (The speed of sound in water = 1400 ms^-1).

KnowledgeBoat · Accepted Answer

As we know, Total distance travelled by the sound in going and then coming back = 2d Given, V = 1400 ms^-1 As important condition for hearing an echo is that the reflected sound should reach the ear only after a lapse of at least 0.1 s after the original sound dies off. Hence, t = 0.1 s Substituting the values in the formula above, we get, Hence, the minimum distance between the source and reflector in water so that echo is heard distinctly = 70 m

Physics

What should be the minimum distance between the source and reflector in water so that the echo is heard distinctly? (The speed of sound in water = 1400 ms^-1).

Sound

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Physics

What should be the minimum distance between the source and reflector in water so that the echo is heard distinctly? (The speed of sound in water = 1400 ms-1).

Sound

Related Questions

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What should be the minimum distance between the source and reflector in water so that the echo is heard distinctly? (The speed of sound in water = 1400 ms^-1).

The wavelength of waves produced on the surface of water is 20 cm. If the wave velocity is 24 ms^-1, calculate (i) the number of waves produced in one second and (ii) the time in which one wave is produced.

Calculate the minimum distance in air required between the source of sound and the obstacle to hear an echo. Take speed of sound in air = 350 ms^-1

A man standing 25 m away from a wall produces a sound and receives the reflected sound. (a) Calculate the time after which he receives the reflected sound if the speed of sound in air is 350 ms^-1. (b) Will the man be able to hear a distinct echo? Explain the answer.

A RADAR sends a signal to an aeroplane at a distance 300 km away, with a speed of 3 x 10⁸ ms^-1. After how much time is the signal received back after reflecting from the aeroplane?