Answer:
The energy of a photon is [tex]3.8\times10^{-19}\ eV[/tex].
Explanation:
Given that,
Wave length = 520 nm
[tex]1 nm = 1\times 10^{-9}\ m[/tex]
Using plank's equation
[tex]E =h\nu[/tex]...(I)
Here, h = plank constant
υ = frequency
Now, using wave equation
[tex]c =\lambda\times \nu[/tex]
The equation can be written as:
[tex]\nu = \dfrac{c}{\lambda}[/tex]
Here, c = speed of light
λ= wave length of light
Put the value of υ in equation (I)
The energy of photon is
[tex]E = h\times\dfrac{c}{\lambda}[/tex]
[tex]E = \dfrac{6.63\times10^{-34}\times3\times10^{8}}{520\times10^{-9}}[/tex]
[tex]E=3.8\times10^{-19}\ eV[/tex]
Hence, The energy of a photon is [tex]3.8\times10^{-19}\ eV[/tex].
