Hey Rajeshwari Sakare,

To score good marks in physics and chemistry. You need to understand the concepts first. Obviously physics is one of toughest subjects to everyone. But if you try to understand the concept inside it then you’ll be the master of physics. To score well in both the subjects you need to concentrate on concepts, defintions and formulas. Study for 2 hours daily and divide that two 2 hours for Physics and chemistry. Here are some best books for Physics and chemistry to score well in KCET,

https://www.google.co.in/amp/s/engineering.aglasem.com/how-to-prepare-for-kcet-2019/amp/

All the best!