Question

The energy ratio of a photon of wavelength 3000 Å and 6000 Å is ______.

Options

• 1 : 1

• 2 : 1

• 1 : 2

• 1 : 4

Answer 1

The energy ratio of a photon of wavelength 3000 Å and 6000 Å is 2 : 1.

Explanation:

λ₁ = 3000 Å, λ₂ = 6000 Å

E₁ = `"hc"/λ_1 = "hc"/3000`,

E₂ = `"hc"/λ_2 = "hc"/6000`

`"E"_1/"E"_2 = "hc"/3000 xx 6000/"hc"` = 2 : 1