A man grows into a giant such that his linear dimension increase by a factor of 9. Assuming that his density remains same, the stress in the leg will change by a factor of

A solenoid wound over a rectangular frame. If all the linear dimensions of the frame are increased by a factor 3 and he number of turns per unit length remains the same, the self inductance increased by a factor of

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?

A coil is wound as a transformer of rectangular cross section. If all the linear dimension of the transformer are increased by a factor 2 and the number of turns per unit length of the coil remain the same, the self-inductance increased by a factor of

A coil is wound on a frame of rectangular cross - section. If all the linear dimensions of the frame are increased by a factor x and the number of turns per unit length of the coil remains the same, self - inductance of the coil increases by a factor of

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 ?

The potential difference applied across a given resistor is altered so that the heat produced per second increases by a factor of 9. By what factor does the applied potential difference change ?

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?

A man spends 75% of his income and saves the rest. If his income increases by 50% and spending increases by 80%, then what is the percentage change in his savings?