Physics miscellaneousEasy
Question
A large glass slab 
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?
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?Options
A.6 cm
B.12 cm
C.3 cm
D.18 cm
Solution
sin θC =
⇒ θC = 37o∴
= tan 37o = 
⇒ r = 6cmCreate a free account to view solution
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