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 cm. What is the value of |
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a) |
6 cm |
b) |
7 cm |
c) |
8 cm |
d) |
9 cm |

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 cm. What is the value of |
|||||||

a) |
6 cm |
b) |
7 cm |
c) |
8 cm |
d) |
9 cm |

1 Answer

127 votes

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