Manipal MET2016ChemistryStructure of Atom
Calculate the energy of photons having wavelength, 5 10⁻⁷ ~m falls on a metal surface of work function, 3.4 10⁻¹⁹ ~J .
Options
- A3.97 10⁻¹⁹ ~J
- B3.55 10⁻¹⁹ ~J
- C2.97 10⁻¹⁹ ~J
- D2.57 10⁻¹⁹ ~J
Correct answer
A. 3.97 10⁻¹⁹ ~J
Step-by-step solution
Energy of photons, E=h = h c aligned & = (6.626 10⁻³⁴ Js ) (3 10^8 ~ms ⁻¹ ) 5 10⁻⁷ & =3.975 10⁻¹⁹ ~J aligned