In order to hear echo why the reflector size must be greater than the wavelength of the wave??
Asked by apoorv dixit | 11th Oct, 2013, 10:56: PM
This is because for reflection to take place, at first place, the reflector size must be greater than the wavelength of the incident wave. If the incident wave wavelength is comparable to the reflector size, the sound will bend around the corners of the reflector, and no appreciable reflection will take place. This is a phenomenon about which you will study in higher classes.
Answered by | 15th Oct, 2013, 02:45: PM
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