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Find the wavelength of electromagnetic w...

Find the wavelength of electromagnetic waves of frequency `6xx10^12Hz` in free space. Gives its two applications.

Text Solution

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`lambda=c/v =(3xx10^8)/(6xx10^12) =5xx10^-5m`
These waves belong to infrared rays, which
are used.
(i) In green houses to keep the plants warm
(ii) In revealing the secret writings on the ancient
walls.
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