Question

I₁/I₂ = (D₂)²/(D₁)²               ------->                  I₁(D₁)² = I₂(D₂)²

1. Given a reading of 50mRem/hr, gamma radiation, at 10 feet, what would be the reading at 15 feet?

2. An X-Ray machine delivers a radiation dose of 15mRem/hr. at 20ft from the machine. How far will the X-Ray technician have to move to reduce his exposure to 7mRem/hr.?

3. An explosion inside a nuclear plant resulted in an exposure of 250 Rem/hr. 2 miles away. How far will you have to move away to decrease your exposure to 15 Rem/hr.?

Answer 1