Question

What is the energy of a photon with:
a wavelength of 827 nm? What type of radiation is it?

Answer 1

Step-by-step explanation:

Given parameters:

Wavelength of photon = 827nm = 827 x 10⁻⁹m

Unknown:

Energy of the photon = ?

Type of radiation = ?

Solution:

The energy of a photon can be derived using the expression below:

E =
`(h c)/(wavelength)`

h is the Planck's constant = 6.63 x 10⁻³⁴m²kg/s

c is the speed of light = 3 x 10⁸m/s

Insert the parameters and solve;

E =
`(6.63 x 10^(-34) x 3 x 10^(8) )/(827x 10^(-9) )`

E = 2.4 x 10⁻¹⁹J

Type of radiation:

Near infrared radiation