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)
Dr suman 1
see the attachment.
theta should be 0 ti pi
semicircular region
yes, for semicircle, theta is 0to pi, by mistake I read it as a circle