Question

What is the energy of a purple
lamp with a frequency of
7.5 x 10^14 Hz

Answer 1

`\huge{4.969 * {10}^( - 19) \:J }`

Step-by-step explanation:

The energy of the purple lamp 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 = 7.5 * 10^14 \: Hz`

We have.

`E = 6.626 * 10^(-34) * 7.5 * 10^(14)`

We have the final answer as

`4.969 * {10}^( - 19) \: J`