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Problem 37 Easy Difficulty

A plastic light pipe has an index of refraction of 1.53. For total internal reflection, what is the minimum angle of incidence if the pipe is in (a) air and (b) water?

Answer

a. $40.8^{\circ}$
b. $60.6^{\circ}$

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Top Physics 103 Educators
Elyse G.

Cornell University

Marshall S.

University of Washington

Farnaz M.

Other Schools

Jared E.

University of Winnipeg

Video Transcript

I want a off the given problem. If the pipe is the bike is in the air. There we go. Ride a critical angle will be called the sign in Warsaw. Off or refracted, it's off air divided by affecting next off plastic plastic that is signing worse off. Careful one divided by 1.53 This gives us a critical angle off 44 80 degrees for but me. Then if the pipe is in the water, if the pipe is in water, then we can write their fact critical angle. Physical coincide in Warsaw, the 50 mics off water divided by a frightened Knicks off plastic. Uh, this is equal to silent. Worse off 1.333 Divided by 1.53 This gives us a critical angle off 60.6 degrees.

Wesleyan University
Top Physics 103 Educators
Elyse G.

Cornell University

Marshall S.

University of Washington

Farnaz M.

Other Schools

Jared E.

University of Winnipeg