I attempt 50 marks questions in physics but i am confident that I get only 18 to 20 marks will CBSE give passing marks to me.
Hello,
You will be awarded marks if your answer is correct and relevant.There will be a fair correction done by the evaluator.If your answers are wrong and not relevant you will not be given marks in order to pass you in the exam by giving marks.Do not be anxious but hope that you get good marks.