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
HEAT CAN BE LOST FROM A SYSTEM BY MEANS OF RADIATION , CONDUCTION AND CONVECTION. LITHOSPHERE IS A SOLID PART CONSIST OF CRUST AND UPPER MANTLE AND IT'S THE PLATE WE ALWAYS TALK ABOUT. AS IT'S IN A SOLID FORM HEAT MUST BE LOST BY MEANS OF CONDUCTION ONLY.. BUT IN ASTHENOSPHERE IT'S DUE TO CONVECTION. NOTE::- RADIATION IS A METHOD OF HEAT TRANSFER REQUIRES NO MEDIUM.,WHERE AS A PARTICLE MEDIUM IS REQUIRED FOR BOTH CONDUCTION AND CONVECTION.