Question

How many Joules of energy are contained in a photon-with 2 = 496.36 nm?

Answer 1

• Wavelength=496.36nm

We know

$\boxed{\sf E=hv=\dfrac{hc}{\lambda}}$

$\\ \sf\longmapsto E=\dfrac{6.626\times 10^{-34}Js\times 3\times 10^8ms^{-1}}{496.36\times 10^{-9}m}$

$\\ \sf\longmapsto E=0.004\times 10^{-17}J$

$\\ \sf\longmapsto E=0.04\times 10^{-16}$

$\\ \sf\longmapsto E=0.04eJ$