CAPE Physics Unit 2 · 2019 · Paper 1 · Question Q33

What is the linear absorption coefficient of a material of thickness 10\text{ cm} that reduces the incident X-ray intensity to half of its original value?

1. (A)0.693\text{ m}^{-1}
2. (B)6.93\text{ m}^{-1}
3. (C)69.3\text{ m}^{-1}
4. (D)693\text{ m}^{-1}