The intensity of radiative field (light source) is proportional to the square of the amplitude, so it decreases as I x as you move away from the source (this is why distant sources of R2 light are dimmer, and why sound volume decreases with distance from the source). Knowing the power P emitted by the point source, determine the intensity I at a distance R (remember I = ).

University Physics Volume 1
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Chapter16: Waves
Section: Chapter Questions
Problem 23CQ: The intensity of a spherical waves decreases as the wave moves away from the source. If the...
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The intensity of radiative field (light source) is proportional to the square of the amplitude,
so it decreases as I x
as you move away from the source (this is why distant sources of
R2
light are dimmer, and why sound volume decreases with distance from the source). Knowing
the power P emitted by the point source, determine the intensity I at a distance R
(remember I = ).
Transcribed Image Text:The intensity of radiative field (light source) is proportional to the square of the amplitude, so it decreases as I x as you move away from the source (this is why distant sources of R2 light are dimmer, and why sound volume decreases with distance from the source). Knowing the power P emitted by the point source, determine the intensity I at a distance R (remember I = ).
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