State the relation between the frequency v of radiation, emitted by an LED and the band gap energy E of the semiconductor used to fabricate it.

E=hv 
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State the relation b/w the frequency 'v' of radiation emitted by LED and the band gap energy E of the semiconductor used to fabricate it .
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The energy of the photon should be greater than or equal to band gap energy.
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The energy of the photon should be equal to or less than band gap energy
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