A glass paperweight with an index of refraction n rests on a desk, as shown in FIGURE
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A glass paperweight with an index of refraction n rests on a desk, as shown in FIGURE 26-67. An incident ray of light enters the horizontal top surface of the paperweight at an angle θ = 77° to the vertical.
In figure 26-67
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(a) Find the minimum value of n for which the internal reflection on the vertical surface of the paperweight is total.
(b) If θ is decreased, is the minimum value of n increased or decreased? Explain.
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Jonas Araujo
I have recently received the degree of PhD. In Physics by the Universidade Federal do Maranhão after spending a term in Durham University, as I have been awarded a scholarship from a Brazilian mobility program. During my PhD. I have performed research mainly in Theoretical Physics and published works in distinguished Journals (check my ORCID: https://orcid.org/0000-0002-4324-1184).
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