Problem- The intensity of raidoactivity depends on the distance of the recipient from the soucre of radiation. Generally it falls as the inverse of the square of the distance separating the source and the object. For example, if the intensity of radioactivity is 1000millirem when the object is 1.0 meter away from the source, the object will be exposed to 100millirem of radiation when it is 10 meters away from the source. Suppose an object receives 234 millirem of radiation when it is 100 meter from the source, calculate the distance if the object is now subject to 135millirem.
Explain each and every step in detail. I need proficient help in the above problems.