Question

The ratio of the energy of a photon of 2000 Ǻ wavelength radiation to that of 4000 Ǻ radiation is

Plz answer step by step.

Answer 1

From 

E = hc/λ

The ratio of energies of two radiations is given by:

E1/E2 = λ2/λ1 = 4000/2000 = 2

becauseEnergy is inversely proportional to wavelength.

Answer 2

Answer:2

Explanation:E=hc/lamda

E1/E2=lamda2/lamda1.......lamda inversely proportional to energy

=4000/2000

=2