Radiation from a point source follows an inverse-square law, where the amount of radiation received is proportional to 1/d 2 , where d is distance. If a Geiger counter that is 1 m away from a small...

Radiation from a point source follows an inverse-square law, where the amount of radiation received is proportional to 1/d², where d is distance. If a Geiger counter that is 1 m away from a small source reads 100 counts per minute, what will be its reading 2 m from the source? 3 m from the source?