Question

Calculate the frequency of a ray of light with an energy of 5.5 x 10-19 joules

Answer 1

f = 0.83 ×10¹⁵s⁻¹

Step-by-step explanation:

Given data:

Energy of ray = 5.5 ×10⁻¹⁹ J

Frequency = ?

Solution:

Formula:

E = hf

f = E/h

J = Kg . m².s⁻²

f = 5.5 ×10⁻¹⁹ Kg . m².s⁻² / 6.63 ×10⁻³⁴ m²Kg/s

f = 0.83 ×10¹⁵s⁻¹