CBSE Class 9 Answered
Newton
Asked by xyzzyspoon | 30 Dec, 2009, 07:48: PM
Expert Answer
Hi dear,
The inverse-square law generally applies when some force, energy, or other conserved quantity is radiated outward radially from a source. Since the surface area of a sphere (which is 4πr2) is proportional to the square of the radius, as the emitted radiation gets farther from the source, it must spread out over an area that is proportional to the square of the distance from the source. Hence, the radiation passing through any unit area is inversely proportional to the square of the distance from the source. Hope this helps.
Regards
Topperlearning.com
Answered by | 31 Dec, 2009, 12:13: PM
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