The energy of a photon of wavelength 390 nm is nearly

Question

The energy of a photon of wavelength 390 nm is nearly (A) 6.6 eV (B) 3.2 eV (C) 5.5 eV (D) 1.2 eV

Tardigrade Admin · Accepted Answer

Here, λ=390 nm Energy of a photon, E=(h c/λ) Take h c=1240 eV nm ∴ E=(1240 eV nm /390 nm )=3.2 eV

Q. The energy of a photon of wavelength 390 nm is nearly