Optics in Water: AP Physics B Concepts and Calculations for Light Sources

AI Thread Summary
The discussion centers on solving optics problems related to a point light source submerged in water. Key calculations include determining the velocity of light in water using the refractive index of 1.33, and finding the critical angle for air-water interference. Additionally, the position of an image formed by a converging lens placed above the light source is to be calculated, considering the lens's focal length of 30 centimeters. Participants emphasize the importance of referencing physics textbooks for formulas and concepts related to light behavior in different media. Understanding these principles is crucial for solving the posed problems effectively.
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***ap Physics B Optics Help!***

A point souce S of monochromatic light is located on the bottom of a swimming pool filled with water to a depth of 1.0 meter. The index of refraction of water is 1.33 for this light. Point P is located on the surface of the water directly above the light source. A person floats motionless on a raft so that the surface of the water is undisturbed.

1) Determine the velocity of the source's light in water



2) Determine the critical angle for the air-water interference



Suppose that a converging lens with a focal length of 30 centimeters in water is placed 20 centimeters above the light source and an image of the light source is formed by the lens.

3) Calculate the position of the image with respect to the bottom of the pool


ok... i can't even TRY to solve this thing... HELP!
 
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ok... i can't even TRY to solve this thing... HELP!
NO, you cann't say that. If you want know, please open the book. Find the relation between the velocity of light in air, in water and the refractive index of the water and the critical angle for the air-water interference
 

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