Question

Energy of radiation having 4000Angstrom wavelength

Answer 1

Answer:

4.97×10−19 Joule

Explanation:

           E=hcλ

E=hcλ=6.626×10−34 J s×3×108 m/s4000×10−10 m

E=4.97×10−19 Joule

Hope it helps........