An argon ion laser puts out 56 of continuous power at a

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An argon ion laser puts out 5.6 of continuous power at a wavelength of 532 . The diameter of the laser beam is 6.0 . If the laser is pointed toward a pinhole with a diameter of 1.1 , how many photons will travel through the pinhole per second? Assume that the light intensity is equally distributed throughout the entire cross-sectional area of the beam.

Reference no: EM13645054

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