A beam of red light has a wavelength of 632 nm in vacuum

PHYSICS · Subjective · A Level · Physics · Particles and radiation · Particles and radiation

Problem

A beam of red light has a wavelength of 632 nm in vacuum. Calculate the energy, in joules, of a single photon in this beam. Use

c = 3.00 \times 10^{8}\,\text{m s}^{-1}

and

h = 6.626 \times 10^{-34}\,\text{J s}