(II) If you shine a flashlight beam toward the Moon,
Chapter , Problem 27(choose chapter or problem)
(II) If you shine a flashlight beam toward the Moon, estimatethe diameter of the beam when it reaches the Moon.Assume that the beam leaves the flashlight through a 5.0-cmaperture, that its white light has an average wavelength of550 nm, and that the beam spreads due to diffraction only.
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