1. If the radiation dose to a patient was 10 gray at a 100 cm distance from the x-ray tube, what…

1. If the radiation dose to a patient was 10 gray at a 100
cm distance from the x-ray tube, what would the dose be if the distance were
reduced to 75 cm?

2. If the radiation dose to a patient is 10 gray at a
distance of 100 cm, what would it be if the x-ray tube is moved out to 150 cm?