you all are kindly requested here not to opt for Physics and Applied or Pure Mathematics because these two are very low scoring subjects as well as very tough. You cannot score more than 40 or 45 marks in each paper of these subject even after working hard. They will consume most of your time and then even after that the preparation will be poor because they are very tough and length. Due to the reason that they are very lengthy you would not be able even to revise them properly for papers due short gap between papers in CSS examination. I have seen Master of physics, mathematics and Engineers weeping in these papers.