Advertisements
Advertisements
Question
What is the condition necessary for an echo to be heard distinctly?
Advertisements
Solution
Echo is a reflected sound heard after the original sound strikes a rigid obstacle...
The conditions are-
1- The reflecting surface should have a larger reflecting surface than the wavelength of the sound
2- The minimum distance to hear the echo should be 17m in the air or as described by the formula `(Vt)/2`...
RELATED QUESTIONS
How is the frequency of a stretched string related to its length?
How is the frequency of a stretched string related it’s tension?
Name the characteristic of sound in relation to its waveform
Define wavelength term in relation to a wave.
Explain how the principle of echo is used by
The bat during its flight at
Define the term Frequency (as applied to sound waves)
What are fishing boats?
A radio signal, sent towards the surface of the moon, is received in 2.5 seconds. If the speed of the radio waves is 3 × 108 ms−1, find the distance of the moon from the earth.
A sound wavelength of 0.332 m has a time period of 10−3 s. If the time period is decreased to 10−4 s, calculate the wavelength and frequency of the new wave.
