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How is wavelenght defined for photon?Why is the rest mass of photon zero?

How is wavelenght defined for photon?Why is the rest mass of photon zero?

Grade:12

1 Answers

Khimraj
3007 Points
3 years ago
energy E = hf = hc/λ 
so wavelength λ  = hc/E
Hope it clears...................................................................

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