chemistry

A laser pulse with wavelength 540 nm contains 4.40 Mj of energy. How many photons are in the laser pulse?

asked by Anonymous
  1. E = hc/wavelength. Substitute and solve for E = energy of one photon. Then,
    E of 1 photon x #photons = 4.40E6 J.
    Solve for # photons.

    posted by DrBob222
  2. 1.198

    posted by Harsh

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