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CBSE Class 9 Answered

Newton
Asked by xyzzyspoon | 30 Dec, 2009, 07:48: PM
answered-by-expert 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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