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[" 10.A large glass slab "(mu=5/3)" of t...

[" 10.A large glass slab "(mu=5/3)" of thickness "8cm" is placed over a point source of light on a plane surface."],[" It is seen that light emerges out of the top surface of the slab from a circular area of radius "R" con.What "],[" is the value of "R?]

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A large glass slab (mu=5//3) of thickness 8cm is placed over a point source of light on a plane surface. It is seen that light emerges out of the top surface of the slab from a circular area of radius R cm. What is the value of R?

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