One piece of filter material placed in a HeNe laser beam reduces the power from 3.0...
One piece of filter material placed in a HeNe laser beam reduces the power from 3.0 mW to 2.25 mW. What is the transmitted power if three more identical filters are used?
Homework Answers
After passing through the last filter (4th),the transmission power is given by..
=1.25-(1.25×0.25)=0.93mW.
Addition: Transmission power=incident power×transmittivity.
Transmitivity={transmitted power}/{incident power}.
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