A point source of light is submerged 2.7 m below the surface of a lake and emits rays in all directions. On the surface of the lake,directly above the source, the area illuminated is a circle. What is the maximum radius that this circle could have? Take the refractionindex of water to be 1.333.NumberINUnits

Answered: A point source of light is submerged…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A point source of light is submerged 2.7 m below the surface of a lake and emits rays in all directions. On the surface of the lake,
directly above the source, the area illuminated is a circle. What is the maximum radius that this circle could have? Take the refraction
index of water to be 1.333.
Number
IN
Units

Expert Solution

Step 1: Given data and concept used

Point source is at a depth of d =2.7m below the water surface

Refractive index of the water is 1.333

We will use the concept of total internal reflection.

When light comes out of the water it bend away from normal, for a particular angle of incidence the rays emerges parallel to the surface of water, if you further increase the angle of incidence the rays of light gets reflected in the same medium i.e. water itself

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