4. (a) Show that the thickness X 1/2 of an absorber required to reduce the intensity of a beam of radiation by a factor of 2 is given by X 1/2 = 0.693/µ. (b) Find the absorber thickness needed to produce an intensity reduction of a factor of 10. (µ = linear attenuation coefficient) %3D %3D

4. (a) Show that the thickness X 1/2 of an absorber required to reduce the intensity of a beam of radiation by a factor of 2 is given by X 1/2 = 0.693/µ. (b) Find the absorber thickness needed to produce an intensity reduction of a factor of 10. (µ = linear attenuation coefficient) %3D %3D

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter8: Electromagnetism And Em Waves

Section: Chapter Questions

Problem 28Q

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Concept explainers

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

Question

4. (a) Show that the thickness x 1/2 of an absorber required to reduce the intensity of a
beam of radiation by a factor of 2 is given by x 1/2 = 0.693/µ. (b) Find the absorber
thickness needed to produce an intensity reduction of a factor of 10. (u = linear
attenuation coefficient)

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