hey,

i hope you are doing great, see getting pass or fail in subjects do not relate with other subjects , there is nothing if you have failed in one subject then you will be failing in other subject too , getting pass or fail in a subject is related with the content you have written in your answer sheet, if you have written well then no one could ever fail you and if you dont then sorry to say no one could spare you.

you are having doubt in physics then let me tell you if you have written well and attempted all the questions with the relevant answers, then you will be awarded  for that. they do award marks for attempted questions irrespective of the thing how much you have written there

second thing you are asking that considering corona crisis , will they do pass you then let me tell you CBSE physics, chemistry and biology has been conducted before the crisis . then there will be no chance of this.

hope this helps

and do not take much tension , you will get pass if you have drafted well

good luck!