Calculate the Half-Value Thickness (In Mm) of Lead If It

question 58

Multiple Choice

Calculate the half-value thickness (in mm) of lead if it reduces the intensity of a beam of x-rays whose wavelength is 10 pm by a factor of two. (Assume the linear absorption coefficient of lead is 43 cm−¹ for x-rays of wavelength 10 × 10−¹² m.)

• A) 0.24
• B) 0.20
• C) 0.12
• D) 0.16
• E) 0.18

---

Definitions:

Helping Behaviors

Acts performed with the intention of benefiting or assisting others without necessarily expecting something in return.

Evolutionary Theory

A scientific theory that explains the diversity of life on Earth, proposing that species change over time through processes such as natural selection and genetic drift.

Siblings

Brothers or sisters, including those by full blood, half-blood, or through adoption.

Cousins

Relatives with whom one shares a common ancestor, but more distant than a sibling or a direct parent/child relationship.