JEE Mains 28-July-2022 Shift 2 Solved Paper

In an experiment to find acceleration due to gravity (g) using simple pendulum, time period of 0.5 s is measured from time of 100 oscillation with a watch of 1 s resolution. If measured value of length is 10‌cm known to 1‌mm accuracy, The accuracy in the determination of g is found to be x%. The value of x is________.