Unpolarised light is passed through a polaroid `P_(1)`. When this poalrised beam passes through another polaroid `P_(2)`, and if the pass axis of `P_(2)` makes an angle `theta` with pass axis of `P_(1)`, then write the expression for the polarised beam passing through `P_(2)`. Draw a plot showing the variation of intensity when `theta` varies from 0 to 2 `pi`.
Text Solution
Verified by Experts
If `I_(0)` is intensity of unpolarised light, then intensity pf polarised light from `P_(1)` is `I_(1) = I_(0)//2` When this is passed through another polaroid `P_(2)`, intensity of polarised light from `P_(2)` is `I_(2) = I_(1) cos^(2) theta` When `theta` is varied from `0 to 2 pi`, we obtain `I_(2)` versus `theta` plot as shown in Fig.
Topper's Solved these Questions
OPTICS
PRADEEP|Exercise Very short answer question|5 Videos
OPTICS
PRADEEP|Exercise very short answer questions|1 Videos
Plane polarised light is passed through a polaroid. On viewing through the polaroid we find that when the polaroid is given one complete rotation about the direction of light
The direction cosines of the line passing through P(2,3,-1) and the origin are
Unpolarised light of intensity I_0 passes through two polaroids P_1 and P_2 such that pass axis of P_1 . A third polaroid P_3 is placed between P_1 and P_2 with pass axis of P_3 making an angle 60^@ with that of P_1 . Determine the intensities of light transmitted by P_1, P_2 and P_3 .
A polarised light intensity I_(0) is passed through another polariser whose pass axis makes an angle of 60^(@) with the pass axis of the former, What is the intensity of emergent polarised light from second polarised?
The circle passing through the point (-1,0) and touching the y -axis at (0,2) also passes through the point:
