U cannot exclude physics from best 4 . From this year new rules have been alloted for bsc hons courses.So, it compulsory to include p+c+m + eng in best 4 

Hey,

you can include physical education in the best four percentage but if you do so there will be a deduction of around 2.5% from your best four score. So it is advices not to include physical education and include only the core subjects for admission in Delhi University.