CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

Three polaroids are kept coaxially. Angle between the first and third polaroid is 90. Angle between the first and second polaroid is 60. If unpolarized light energy incident on the first polaroid is I0. Light energy that emerges from the system is
  1. Zero 
  2. 3I08
  3. 3I016
  4. 3I032


Solution

The correct option is D 3I032
The intensity of light leaving the first polaroid will be I02
According to Malus law, I=I0cos2θ
After 2nd Polaroid, I=I02cos260
I=I02×(12)2=I08
After 3rd Polaroid, I=I08cos230
I=I08×(32)2=3I032

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
QuestionImage
QuestionImage
View More...


People also searched for
QuestionImage
QuestionImage
View More...



footer-image