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Geometrical Optics question

2010 · Shift 2 · Q49
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Geometrical Optics question

2010 · Shift 2 · Q49

JEE AdvancedPhysicsGeometrical OpticsNumerical+3 / −1
A large glass slab (μ\muμ = 5/3) of thickness 8 cm 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?
Numerical answer
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