Question

if electromagnetic radiation has a frequency of 2.0 x 10^15 s^-1 what is the radiation’s energy?

Answer 1

$1.3\times 10^{-18}$ Joule is the radiation’s energy.

Explanation:

• The energy of electromagnetic radiation is given by Planck's law:

                                 $E=h\times \nu$

                            Where:

                       E = Energy of electromagnetic radiation

                       h = Planck's constant=$6.626\times 10^{-34} Js$

                       $\nu$ = frequency of the electromagnetic radiation

Given:

The frequency of the electromagnetic radiation =$\nu = 2.0\times 10^{15} s^{-1}$

To find:

The energy of the electromagnetic radiation

Solution:

The frequency of the electromagnetic radiation = $\nu = 2.0\times 10^{15} s^{-1}$

The energy of the radiation = E

$E=h\times \nu\\E=6.626\times 10^{-34} Js\times 2.0\times 10^{15} s^{-1}\\=1.3\times 10^{-18} J$

$1.3\times 10^{-18}$ Joule is the radiation’s energy.

Learn more about Planck' law here:

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