When X-rays of wavelength 0-5Å pass through 7 mm thick aluminium sheet, then their intensity reduces to one fourth. The coefficient of absorption of aluminium for these X-rays will be :

When X-rays of wavelength 0-5Å pass through 7 mm thick aluminium shee

1.	When X-rays of wavelength 0-5Å pass through 7 mm thick aluminium sheet, then their intensity reduces to one fourth. The coefficient of absorption of aluminium for these X-rays will be :
Answer» `0.198mm^(-1)` `0.227mm^(-1)` `0.752mm^(-1)` `0.539mm^(-1)` Solution :Because `mu=(2303)/(X)log_(10)((I_(0))/(I))` `mu=(2303 log_(10)4)/(7)=(2303xx06023)/(7)=0*198 mm`

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When X-rays of wavelength 0-5Å pass through 7 mm thick aluminium sheet, then their intensity reduces to one fourth. The coefficient of absorption of aluminium for these X-rays will be :

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