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Chapter 5: Q41P (page 1107)

A ray of light travelling ina block of glass is incident on the top surface at an angle with respect to the normal in the glass. If a layer of oil is placed on the top surface of the glass, the ray is totally reflected. What is the maximum possible index of refraction of the oil?

Short Answer

Expert verified

index of refraction should be more than 1.28 for oil to get the total internal reflection

Step by step solution

01

About Snell's law 

Snell's law, in optics, a relationship between the path taken by a ray of light in crossing the boundary or surface of separation between two contacting substances and the refractive index of each.

02

Determine the MAximum possible index of refraction of oil 

To get the index of refraction of oil We need to apply Snell's Law.

=»

Hence, index of refraction should be more than 1.28 for oil to get the total internal reflection-

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Most popular questions from this chapter

Interference can occur in thin films. Why is it important that the films be thin? Why don’t you get these effects with a relatively thick film? Where should you put the dividing line between “thin” and “thick”? Explain your reasoning.

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