When X-rays of wavelength 0.5 A would be transmitted by an aluminum tu – McqOptions

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1.	When X-rays of wavelength 0.5 A would be transmitted by an aluminum tube of thickness 7 mm, its intensity remains one-fourth. The absorption coefficient of aluminum for these X-rays is
A.	\[0.188m{{m}^{-1}}\]
B.	\[0.189m{{m}^{-1}}\]
C.	\[0.198m{{m}^{-1}}\]
D.	None of these
Answer» D. None of these

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