Central Board Of Secondary Education [CBSE] — difficulty of physics paper 2018 for chennai region

This time the physics question paper which was set for chennai region was too tough, lenthy and some questions were there which were removed earlier like mirror lens combination that is in set 1and 55/1 quetion no. 17. As cbse used to tell that you always set question paper for average students but this time you missed your word. Giving one day time how can you expect us to prepare both numericals and theory? So please provide atleast 20 grace marks.