About 5% of the power of a 100 W light bulb is converted to visible radiation. What is the average intensity of visible radiation(a) at a distance of 1m from the bulb?(b) at a distance of 10 m?Assume that the radiation is emitted isotropically and neglectreflection.

About 5% of the power of a 100 W light bulb is converted to visible radiation. What is the average intensity of visible radiation(a) at a distance of 1m from the bulb?(b) at a distance of 10 m?Assume that the radiation is emitted isotropically and neglectreflection.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 71P: Suppose a spherical particle of mass m and radius R in space absorbs light of intensity I for time...

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Electromagnetic Waves

Electromagnetic waves are waves that consist of magnetic field and electric field components perpendicular to each other. These field components are also perpendicular to the direction of propagation of the wave.

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About 5% of the power of a 100 W light bulb is converted to visible radiation. What is the average intensity of visible radiation
(a) at a distance of 1m from the bulb?
(b) at a distance of 10 m?
Assume that the radiation is emitted isotropically and neglect
reflection.

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