KEAM 2023 Physics and Chemistry Solved Paper

A simple pendulum experiment is performed for the value of ' g‌' ‌, the acceleration due to the Earth's gravity. The measured value of length of the pendulum is 25‌cm with an accuracy of 1‌mm and the measured time for 100 oscillations is found to be 100 sec with an accuracy of 1sec. The percentage uncertainty in the determination of ' g ' is :