The energy E of a photon and its wavelength are related by Eλ = X. the numerical value of X is?
[h = 6.63 x 10\(^{-34}\)js, c = 3 x 10\(^8\) ms\(^{-1}\)]
E = HF = (hc)/λ
Eλ = hc
∴ X = hc ==6.63 x 10\(^{-34}\) x 10\(^8\)
= 1.989 x 10\(^{-25}\)
=1.99 x 10\(^{-25}\)
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