The energy of a photon is

PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation

Problem

The energy of a photon is

2.75\,\text{eV}

. Given that

1\,\text{eV} = 1.60 \times 10^{-19}\,\text{J}

, what is the wavelength of the photon in vacuum, expressed in nanometres? (a)

364\ \text{nm}

(b)

452\ \text{nm}

(c)

662\ \text{nm}

(d)

723\ \text{nm}

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