At what depth from earth's surface does the acceleration due to gravity becomes `1/4` times that of its value at surface ?

At what depth below the surface of earth the acceleration due to gravity becomes one-third of its value at the surface of earth ?

At what depth below the surface does the acceleration due to gravity becomes 70% of its value in the surface of earth ?

At what depth below the surface does the acceleration due to gravity becomes 70% of its value in the surface of earth ?

At what depth below the surface does the acceleration due to gravity becomes 70% of its value in the surface of earth ?

At which height from the earth's surface does the acceleration due to gravity decrease by 75 % of its value at earth's surface ?

At which height from the earth's surface does the acceleration due to gravity decrease by 75 % of its value at earth's surface ?

At which height from the earth's surface does the acceleration due to gravity decrease by 75 % of its value at earth's surface ?

At what height from Earth's surface the acceleration due to gravity becomes 20% of its value on the surface of earth. [Radius of earth = 6,400 km.]

Calculate the depth below the surface of the earth where acceleration due to gravity becomes half of its value at the surface of the earth . Radius of the earth = 6400 km.