2. Rotate the analyzer and obtain maximum value of light intensity ( this corresponds to maximum value of the current intensity ). As to the law of Malus, angle θ in this case is equal to 0 .
3. Rotate the analyzer from this position to 10 ( from 0 to 90 ) and write down the results of the measurements (Ifand ) in to the table.
θ
cosθ
cos2θ
If, mA
4. Switch off the Laser.
5. Plot the graph of relationship of to cos2θ according to the results of your measurements ( the method of linearization is used ).
6. Make up the conclusion on the validity of the law of Malus under the conditions of your experiment.