Question

Calculate the energy of radiation with wavelength 500nm

Answer 1

Energy of one photon E=

λ

hc

energy of one mole photon=N

A

λ

hc

E=N

A

×

600×10

−9

6.626×10

−34

×3×10

8

E=N

A

×

5

19.878

×10

−19

=N

A

×3.9756×10

−19

E=3.97×10

−19N

A

Answer 2

Answer:

3.9756 * 10^-19

Explanation:

E = h c / wavelength

h = 6.626 * 10^(-34) J.s ( planks constant )

c = 3* 10 ^8 m/s ( speed of light)

E =  [6.626 * 10^(-34) * 3* 10 ^8] / 500*10^-9

E = 3.9750* 10^-19 J