Question

How much energy does a 930 nm wave of light have? (The speed of light in a

Answer 1

Answer:

$E=2.14\times 10^{-19}\ J$

Explanation:

We have,

Wavelength of a light is 930 nm

It is required to find the energy of a wave of light. The energy of a wave is given in terms of following as :

$E=\dfrac{hc}{\lambda}\\\\E=\dfrac{6.626\times 10^{-34}\times 3\times 10^8}{930\times 10^{-9}}\\\\E=2.14\times 10^{-19}\ J$

So, the energy of the wave is $2.14\times 10^{-19}\ J$