Exercise $33\mathrm{.}18-$ Enhanced $-$ with Feedback

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Review

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Constants

Introduction

A beam of light is traveling inside a solid glass cube that has index of refraction $1\mathrm{.}50.$ It strikes the surface of the cube from the inside.

Part A

If the cube is in air, at what minimum angle with the normal inside the glass will this light not enter the air at this surface?

Express your answer in degrees.

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Part B

What would be the minimum angle in part A if the cube was immersed in water?

Express your answer in degrees.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

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