What is the wavelength of the radiation with photon energy which is the mean value of photon energies of radiations with wavelength λ1 = 4000 A0 and λ2 = 6000 A0 ?

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5000 A0

5200 A0

5600 A0

4800 A0

answer is D.

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Detailed Solution

hcλ3 = hcλ1+hcλ22⇒ 1λ3 = 12 1λ1 + 1λ2=12 14000 + 16000⇒ λ3 = 4800 Ao

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