Question

The frequency of a photon that has an energy of 8.5 x 10-12 j is ________ s-1.

Answer 1

The working equation to solve this problem is written below:

E = hf,
where h is the Planck's constant = 6.626×10⁻³⁴ J·s
This equation is known as the Planck's equation.

Solving for the frequency,
f = E/h
f = 8.5×10⁻¹² J/6.626×10⁻³⁴ J·s
f = 1.282×10²² s⁻¹