Question

Calculate the wavelength of radiation (A) emitted by an LED made up of a semiconducting material with band gap energy 1.43eV.

Answer 1

Answer:

Band gap energy  eV

To Find:

Wavelength of radiation.

For calculating the wavelength of light,

According to the planck's law,

   

Where  planck constant = ,  

   

   

  m

Therefore, the wavelength of radiation emitted by LED is m

Explanation: