Answer:
[tex]E=4.3\times 10^{-19}\ J[/tex]
Explanation:
Given that,
The wavelength of a photon of blue light is 462 nm
We need to find the energy of this photon. The formula for the energy of a photon is given by :
[tex]E=\dfrac{hc}{\lambda}\\\\E=\dfrac{6.63\times 10^{-34}\times 3\times 10^8}{462\times 10^{-9}}\\\\=4.3\times 10^{-19}\ J[/tex]
So, the energy of this photon is [tex]4.3\times 10^{-19}\ J[/tex].
