A Glass Plate Having an Index of Refraction Is 1

question 27

Multiple Choice

A glass plate having an index of refraction is 1.66 is immersed in a certain alcohol.The surface of the glass is inclined at an angle of 44° with the vertical.When a horizontal ray in the glass strikes the interface,you observe that it is at the critical angle.What is the index of refraction of the alcohol?

• A)1.15
• B)1.13
• C)1.11
• D)1.09
• E)1.17

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