Badiuddin askIITians.ismu Expert
Last Activity: 15 Years ago
Hi
If You are not able to understand some topic then no need to worry.
it is very common case to many student that they are very Good in some topic. while in some other topic they are not so good.
The only thing is that your basic concept about modern physics is not clear.
Try from the zero level. first go throug the whole theory of modern physics
then You should solve simple questions and solve previos year question
then You should go for tough question.