What is the unit of intensity and absorption coefficient? 16-4 Needed math These

Question

What is the unit of intensity and absorption coefficient?

16-4 Needed math These equations should be presented in your class notes and textbook. For the abeorption of electro- magnetic radiation in a material, we have 1-10 exp ?-11) is the absorption coefficient l, is initial intensity and I the intensity of a transmitted radiation erededesti beam. 2The range is estimated by plotting the beta intensity vs, absorber thicknes and extending the straight part of the graph to the r-axes. Your TA will show you more. Lab setup Each group will be given a Geiger counter to work with. The basic workings of the counter are fairly simple to understand. Every time an ionizing particles passes through the counter, it ionizes some gas molecules inside the tube in the body of the counter. An electric field is applied to the tube, whieh

Explanation / Answer

Unit of intensity in SI is "watts per square meter" (W/m2).

Coming to absorption coefficient ?, it is multiplied with x (thickness). But the product should be dimensionless as it is in exponent i.e. exp (-?x). To make the product dimensionless quantity, absorption coefficient ? should have unit "m-1" (meter inverse) as x has unit "m" (meter).

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