Question

Using c=λν and E=hν (Where h or Planck’s constant is 6.626 *10 ⁻³⁴Js). Please find the energy that a wavelength has if it has a wavelength of 3.000*10⁷ nm.

Answer 1

I attached the working and the answer to both questions below.

Please note that C = speed of light, ν = frequency, λ= wavelength, h = Planck's Constatnt

The energy of a wave that has a wavelength of 3.0 × 10⁷ nm is 6.26 × 10⁻²⁴ J