Answer:
The answer is
[tex]2.86 \times {10}^{ - 19} \: J[/tex]
Explanation:
The energy of a quantum of light can be found by using the formula
E = hf
where
E is the energy
f is the frequency
h is the Planck's constant which is
6.626 × 10-³⁴ Js
From the question
f = 4.31 × 10¹⁴ Hz
We have
E = 4.31 × 10¹⁴ × 6.626 × 10-³⁴
We have the final answer as
[tex]2.86 \times {10}^{ - 19} \: J[/tex]
Hope this helps you
