Explain inverse square law

Dear student,

The inverse-square law, in physics, is any physical law stating that a specified physical quantity or intensity is inversely proportional to the square of the distance from the source of that physical quantity. The fundamental cause for this can be understood as geometric dilution corresponding to point-source radiation into three-dimensional space.

If a quantity if inversely dependent on the square of the distance, then in such a case, dependence is called the inverse square law.

For example, the Newtonian force acting between two bodies is inversely proportional to the square of the distance between them.

Regards.