Working of 3d Glasses
Trending Questions
Q.
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 the light, one of the following is observed
[MNR 1993]
The intensity of light gradually decreases to zero and remains at zero
The intensity of light gradually increases to a maximum and remains at maximum
There is no change in intensity
The intensity of light is twice maximum and twice zero
Q.
Polarised glass is used in sun glasses because
[CPMT 1981]
It reduces the light intensity to half on account of polarisation
It is fashionable
It has good colour
It is cheaper
