Physics

Problem

Ultraviolet radiation with a wavelength of 248 nm in vacuum is often used in photolithography. Calculate the energy of a single photon of this radiation in electronvolts. Use

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

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

, and

1\,\text{eV} = 1.602 \times 10^{-19}\,\text{J}

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