Q41P
Question
A ray of light travelling in a 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?
Step-by-Step Solution
Verified Answer
index of refraction should be more than 1.28 for oil to get the total internal reflection
1Step 1 : 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.
2Step 2: 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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