Question

What is the frequency of a photon whose energy is 5.4 ´ 10-19 J?  (h = 6.626 ´ 10-34 J·s)

Answer 1

8.15 x 10¹⁴Hz

Step-by-step explanation:

Given parameters:

Energy of photon = 5.4 x 10⁻¹⁹J

h = 6.626 x 10⁻³⁴J.s

Unknown:

Frequency of the photon = ?

Solution:

The energy of a photon is given as;

E = hf

h is the Planck's constant

f is the frequency

f =
`(E)/(h)` =
`(5.4 x 10^(-19) )/(6.626 x 10^(-34) )` = 8.15 x 10¹⁴Hz