Answer the quations that related to Inverse Square Law, HV L 1-Imagine you are s

Question

Answer the quations that related to Inverse Square Law, HVL

1-Imagine you are standing 1 meter away from a radioactive source. Which option would protect you better?

Chooes:

-Placing one HVL of material in between you and the source.

-stepping back one more meter

then why?

2-Imagine a radioactive source in the middle of a room. A detector is stationed 1 meter away from it, currently reading 10 R. You walk in holding a second detector. How close can you get to the source (in meters) before your detector reads 1 R?

3- Assume the source in Question #2 is emitting 6 MV photons. Using the graph included in the pre-lab handout, what is the HVL of lead for this source (in cm)? (Density of lead is 11.34g/cm3 at room temp; use solid line of the graph, not dashed)

Explanation / Answer

solving first question

Question 1

Answer

suppose intensity is I

if HVL is kept ,intensity will be halved i.e.0.5I

if we moved 1 m ,intensity will be 1/4th (By inverse square law)

so moving 1 m will be more safe and better

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