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)
Devisharan
Since Lagrangian contains the Kinetic energy and potential energy. kinetic energy is the function of Q dot and potential energy is the function of q . So option B is correct.