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Textbook Expert
Textbook ExpertVerified Tutor
18 Nov 2021

Given information

Given : 

From the given diagram,
Let , and
Let PQ =
Angle of incident at air-water surface be
Let be the angle of refraction at air-water surface
Refractive index of water 

 

Step-by-step explanation

Step 1.

Formula:

After applying Snell’s Law
                     

There, all alphabets are in their usual meanings.

 

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