List of top Physics Questions on Newtons law of gravitation asked in MHT CET

The height from earth's surface at which acceleration due to gravity becomes g/ where g is acceleration due to gravity on the surface of earth and R is radius of earth?

The height from earth's surface at which acceleration due to qravity becomes g/4 is __? (Where g is acceleratio due to gravity on the surface of earth and R is radius of earth)