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Question

Calculate the momentum of a photon of light of wavelength 500 nm

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Solution

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Given
$λ = h / p$
$\Rightarrow P = h / λ =$ $\frac{6.63 \times 10^{- 34}}{500 \times 10^{- 9}} J - S = 1.326 \times 10^{- 27} = 1.33 \times 10^{- 27} k g - m / s .$

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