JEE Advanced 2022 Paper 1

A projectile is fired from horizontal ground with speed v and projection angle θ. When the acceleration due to gravity is g, the range of the projectile is d. If at the highest point in its trajectory, the projectile enters a different region where the effective acceleration due to gravity is g′=‌

g

0.81

, then the new range is d′=nd. The value of n is