Well such type of questions are actually scoring and important too. Most questions in physics are such solving types only. The only solution to your question is - PRACTICE. Practice more and more, harder and harder. Learn the synopsis of the chapter first, byhesrt the formulas then and lastly practice the Numericals and mcqs. If you aren't able to solve them by yourself, refer the solution and with time you'll surely learn and improve. Everything comes slowly, and I'm sure if you work hard, you'll be able to get rid off this problem too and then surely you'll be able to score 40+ in physics in MhT CET.

Refer to the site below to get some more tips and tricks to crack the MhT CET examination -

https://engineering.careers360.com/articles/follow-these-tips-crack-mht-cet-2020-exam

Best wishes. Thank you.