Determine the Wavelength of lightemitted from LED which is made up of GaAsP semiconductor whoseforbidden energy gap is 1.875 eV.Mention the colour of the lightemitted.

Determine the Wavelength of lightemitted from LED which is made up of

1.	Determine the Wavelength of lightemitted from LED which is made up of GaAsP semiconductor whoseforbidden energy gap is 1.875 eV.Mention the colour of the lightemitted.
Answer» Solution :`E_g=(HC)/(lambda)` Therfore ,`lambda=(hc)/(E_g)=(6.6xx10^(-34)xx3xx10^(8))/(1.875xx1.6xx10^(-19))=660nm` The wavelength 660 nm CORRESPONDS to red COLOUR light.

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Determine the Wavelength of lightemitted from LED which is made up of GaAsP semiconductor whoseforbidden energy gap is 1.875 eV.Mention the colour of the lightemitted.

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