Ray Optics: Refraction and Lenses
Refraction and Lenses: Audio Guided Solution
Problem 12:
Ray Zuvlite is playing with his underwater laser. He descends beneath the water surface in his backyard pool to a vertical depth of 7.09 feet and directs the laser beam at an angle towards the pool's edge. The beam emerges from water (n=1.33) into air at the pool's very edge and projects onto a pool house which is located 17.21 feet horizontally from the pool's edge. The dot on the pool house is observed to be located at a vertical height of 8.75 feet. Determine the distance which Ray is located horizontally out from the edge of the pool.
Audio Guided Solution
Habits of an Effective Problem Solver
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Read the problem carefully and develop a mental picture of the physical situation. If necessary, sketch a simple diagram of the physical situation to help you visualize it.
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Identify the known and unknown quantities and record them in an organized manner. Equate given values to the symbols used to represent the corresponding quantity - e.g., do = 24,8 cm; di = 16.7 cm; f = ???.
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Use physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
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Identify the appropriate formula(s) to use.
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Perform substitutions and algebraic manipulations in order to solve for the unknown quantity.
Read About It!
Get more information on the topic of Refraction and Lenses at The Physics Classroom Tutorial.
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