CAPE Physics Unit 2 · 2019 · Paper 2 · Question 3(b)(iii)

Data in Table 1 was obtained from an experiment where an X-ray beam of intensity I₀ passed through a series of 2 cm thick lead plates. The emerging beam intensity I was measured at each stage.

Based on the result obtained in (b)(ii), calculate a value for µ_lead, the linear absorption coefficient of lead in m⁻¹.

This question uses a figure or table from the paper — you'll see it when you practise.