Question

Calculate the wavelength of a photon in angstrome units having energy of one electron volt .

Answer 1

here is a solution to the question :

Answer 2

Answer:

The wavelength of a photon is $12350\AA$.

Explanation:

Energy of the photon = 1 eV

1 eV = $1.6021\times 10^{-19} J$

Energy of the photon is given by:

$E=\frac{hc}{\lambda }$

$1.6021\times 10^{-19} J=\frac{6.6\times 10^{-34}Js\times 3\times 10^8 m/s}{\lambda }$

$\lambda =\frac{6.6\times 10^{-34}Js\times 3\times 10^8 m/s}{1.6021\times 10^{-19} J}$

$\lambda = 12.35\times 10^{-7} m =12.35\times 10^{-7}\times 10^{10} \AA=12350\AA$

The wavelength of a photon is $12350\AA$.