Polaroid sunglasses decrease glare on a sunny day because
Doubly refracting calcite crystal is placed over an ink dot. On seeing through the crystal, one observes.
When the light is polarised by reflection, what is the angle between the reflected and refracted rays
The intensity of light incident on a polariser is I and that of the light emerging from it is also I. The light incedent on the polariser is
When the analyser in rotated througt 360Â°, one observes