Draw graph showing the variation of electronic field & electronic potential with distance 'r' due to point change.

Draw a graph showing the variation of decay rate with number of active nuclei.

The graph showing the variation of the magnetic field strength (B) with distance (r) from a long current carrying conductor is.

The diagram showing the variation of gravitational potential of earth with distance from the centre of earth is

The diagram showing the variation of gravitational potential of earth with distance from the centre of earth is

(a) Use Gauss's law to show that due to a uniformly charged spherical shell of radius R, the electric field at any point situated outside the shell at a distance r from its centre is equal to the electric field at the same point, when the entire charge on the shell were concentrated at its centre. Also plot the graph showing the variation of electric field with r, for r le R and r ge R . (b) Two point charges of +1 muC and +4 muC are kept 30 cm apart. How far from the +1muC charge on the line joining the two charges, will the net electric field be zero ?

Draw a graph showing the variation of the gravitational acceleration due to the Earth with depth and altitude.

Draw graphs showing the variation of acceleration due to gravity with depth below the earth's surface.