Physics-
General
Easy
Question
A light ray is incident on a glass slab as shown in figure If the refractive index of glass is varying , which of the following figures shows the correct path of light ray .
- If
= ax + b (a, b 
positive) 
- If = a – bx (a, b positive)
- If = ay + b (a, b positive)
- If = a + by2 (a, b positive)
= ax + b (a, b positive)
= a – bx (a, b positive)
= ay + b (a, b positive)
= a + by2 (a, b positive)
The correct answer is: If = ax + b (a, b positive)
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