Question

Find the wavelength of a photon which has 500.0 eV of energy.

Answer 1

2.5 x 10⁻⁹ m

Step-by-step explanation:

E = Energy of photon = 500 eV = 500 x 1.6 x 10⁻¹⁹ J

c = speed of photon = 3 x 10⁸ m/s

λ = wavelength of photon = ?

Energy of photon is given as

`E = (hc)/(\lambda )`

inserting the values

`500* 1.6* 10^(-19) = ((6.63* 10^(-34))(3* 10^(8)))/(\lambda )`

λ = 2.5 x 10⁻⁹ m