Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Sajan sarthak Best Answer
As it's a Mcq the second option is more appropriate and correct one although we rotate the stage so that light of differtial wave length absorbed by mineral is different.. it's observed in plane polarised light.