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How many photons are produced in a laser pulse of 0.682 J at 649 nm?
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How many photons are produced in a laser pulse of 0.682 J at 649 nm?

User Nomeswaran
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There would be 1.2 x 10^18 photons of wavelength 657 nm in a pulse of laser light energy of 0.363 joules.
User Kevin Keane
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