Question

derive inverse square rule.

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Answer 1

The intensity of the light to an observer from a source is inversely proportional to the square of the distance from the observer to the source. This shows that as the distance from a light source increases, the intensity of light is equal to a value multiplied by 1/d2. Thus closer a light source brighter it is. This is very evident from the fact that in the night when a car approaches us from a distance it looks dark but as it comes near the light the headlights make it be brighter as the distance between the observer and the car has decreased

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Answer 2

Answer:

This is inverse-square rule for the force of gravitation. According to this rule, the force of gravitation on a planet should decrease as the square of the distance of the planet from the sun. Newton further showed that the gravitational force is proportional to the product of the masses of the two objects.

Explanation:

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