A lens is placed on a flat plate of glass to test whether its surface is spherical.
Question:
(a) Show that the radius rm of the m th dark ring should be
Where R is the radius of curvature of the lens surface facing the plate and the wavelength of the light used is l. Assume that rm (b) Are the dark fringes equally spaced? If not, do they get closer together or farther apart as you move out from the center?
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Incident light Glass Air Glass
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a Destructive interference is due to a relative phase difference of 180 The dark rings are due to de...View the full answer
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Related Book For
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
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