If a sample emits 2000 counts per second when the detector is 1 meter from the sample, how many counts per second would be observed when the detector is 3 meters from the sample? Using the sample in above question how many counts per second would be observed when the detector is 10 meters away from the sample?

At 3 meter distance, the per-second count is 222.22 and at a 10 meter distance, the per-second count is 20.

Explanation:

The number of particles (N)  counts are inversely proportional to the distance between the source and the detector.  

By using the below formula we can find the number of counts.

The number of count per second, when the distance is 3 meters.

Number of count per second when the distance is 10 meters.

the answer is b

explanation:

the assestment will probley apele with cause and effect