Question

(i) State law of Malus.
(ii) Draw a graph showing the variation of intensity (I) of polarised light transmitted by an analyser with an angle (θ) between polariser and analyser.
(iii) What is the value of the refractive index of a medium of polarising angle 60°?

Answer 1

Answer:

1). the law stating that the intensity of a beam of plane-polarized light after passing through a rotatable polarizer varies as the square of the cosine of the angle through which the polarizer is rotated from the position that gives maximum intensity