*8.24 A penny lies at the bottom of a water fountain at a depth of 30 cm. Determine the diameter of a piece of paper which, if placed to float on the surface of the water directly above the penny, would totally obscure the penny from view. Treat the penny as a point and assume that n = 1.33 for water.

*8.24 A penny lies at the bottom of a water fountain at a depth of 30 cm. Determine the diameter of a piece of paper which, if placed to float on the surface of the water directly above the penny, would totally obscure the penny from view. Treat the penny as a point and assume that n = 1.33 for water.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter35: The Nature Of Light And The Principles Of Ray Optics

Section: Chapter Questions

Problem 35.63AP

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Concept explainers

Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.

Question

*8.24 A penny lies at the bottom of a water fountain at a depth
of 30 cm. Determine the diameter of a piece of paper which,
if placed to float on the surface of the water directly above the
penny, would totally obscure the penny from view. Treat the
penny as a point and assume that n = 1.33 for water.

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