If the radius of the earth were increased by a factor of 2 keeping the mass constant, by what factor would its density have to be changed to keep g the same?

If the radius of the earth were incresed by a factor of 3, by what factor would its density to be changed to keep 'g' the same ?

If the radius of the earth be increased by a factor of 5 , by what factor its density be changed to keep the value of g of the same?

Keeping mass unchanged if radius of the earth increases by a factor 4, then by which factor density must have to be changed so that the value of g remains same ?

If the distance between two masses is increased by a factor of 4, by what factor would the mass of one of them have to be altered to maintain the same gravitational force?

If the distance between two masses is increased by a factor of 5, by what factor would the mass of one of them have to be altered to maintain the same gravitational force? Would this be an increase or decrease in the mass?

If the value of Planck's constant were to increase by a factor of two, the size of a hydrogen atom would

If the radius of the earth is made three times, keeping the mass constant, then the weight of a body on the earth's surface will be as compared to its previous value is

If the radius of a potentiometer wire is increased four times, keeping its length constant, then the value of its potential gradient will become