Question

The wavelength of one line in the emission spectrum of c is 538 nm. what is the energy of one photon with this wavelength?

Answer 1

The energy of this photon = 3.69 x 10⁻¹⁹ J

Step-by-step explanation:

The energy of a photon is given by

`E= (h c)/(\lambda)`

h= Planck's constant= 6.626 x 10⁻³⁴ J s

c= velocity of light= 3 x 10⁸ m/s

λ= wavelength= 538 nm= 538 x 10⁻⁹ m

so
`E= (6.626* 10^(-34)* 3*10^(8))/(538*10^(-9))`

E=3.69 x 10⁻¹⁹ J