Some modern optical devices are made with glass whose index of refraction changes with distance from the front surface FIGURE CP16 84 shows the index of refraction as a function of the distance into a slab of glass of thickness L The index of refraction increases linearly from n 1 at the front surface to n 2 at the rear surface a Find an expression for the time light takes to travel through this piece of glass b Evaluate your expression for a 1 0 cm thick piece of glass for which n 1 1 50 and n 2 1 60 Index of refraction n 2 Distance FIGURE CP16 84

Question: Some modern optical devices are made with glass whose index of refraction changes with distance from the front surface. FIGURE CP16.84 shows the index of

Some modern optical devices are made with glass whose index of refraction changes with distance from the front surface. FIGURE CP16.84 shows the index of refraction as a function of the distance into a slab of glass of thickness L.
The index of refraction increases linearly from n₁at the front surface to n₂at the rear surface.
a. Find an expression for the time light takes to travel through this piece of glass.
b. Evaluate your expression for a 1.0-cm-thick piece of glass for which n₁= 1.50 and n₂= 1.60.

$Index of refraction n П2 п Distance FIGURE CP16.84$

Index of refraction n 2 Distance FIGURE CP16.84

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