Question

What will be the energy of one photon of
radiation whose frequency is 5 x 1014 Hz?

Answer 1

The energy of one photon (E) =hv

Here, h=6.626×10

34

js

v=5×10

14

s

−1

E=6.626×10

−34

×5×10

14

3.313×10

−19

j

Thus the energy of one mole of photons is E×A

Where A is the Avogadro number

=3.313×10

−19

j×6.022×10

−23

mol

=199.50×10

−3

jmol

Answer 2

Explanation:

The energy of one photon (E) =hv

Here, h=6.626×10³⁴js

v=5×10¹⁴s-¹

E=6.626×10-³⁴ × 5× 10¹⁴

=3.313j

Thus the energy of one mole of photons is E×A

Where A is the Avogadro number

=3.313×10-¹⁹j×6.022×10-²³mol

=199.50×10-³jmol