yes... its true...the inverse square law is universal. it can be applied to gravity between two objects, the electric force between 2 charges etc...
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any physical law stating that some physical quantity or strength is inversely proportional to the square of the distance from the source of that physical quantity.
inverse square law is the law that states the intensity of the light, sound etc is directly proportional to 1/ distance squared meaning the further you are from the source the less intense the light etc will be. e.g. an object 1m away from a light source 1/1^2=1 , 2m 1/2^2= 1/4 and so forth
As the distance of the dots from the center increases, the number of dots per unit area decreases. This is because the area over which the dots are distributed becomes larger as they move away from the center, resulting in a lower density of dots per unit area. Mathematically, this relationship can be described by the inverse square law, where the intensity (or density) of a phenomenon decreases as the square of the distance from the source increases.
The illumination on the surface would be reduced by a factor of four, thereforeif the distance from a light source is doubled, the illumination provided by the source is one fourth as great.
Yes, it will be!