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  4. Write dimensional formula for the intensity of radiation

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Q. Write dimensional formula for the intensity of radiation

Gujarat CETGujarat CET 2007Physical World, Units and Measurements

Solution:

Intensity of radiation is energy flowing per second per unit area, ie
[ Intensity ] = $ \frac{ [ energy ] }{ [ time ] \, [ area ] } $
= $ \frac{ [ ML^2 T^{ - 2} ] } { [ T ] [ L^2 ] } $
= $ [ ML^0 T^{ - 3} ] $