For `O_2^+`molecule draw energy level diagram and find out the bond order of the species.

Draw the molecuar orbital diagram of N_2 and calculate the bond order.

Draw the energy level diagram to show different series of hydrogen atoms.

Draw the level diagram of a Daniell cell.

Draw the different energy level diagram for a hygrogen atom.

An object 5cm in length is held 25cm away from a converging lens of focal length 10cm. Draw the ray diagram and find the position, size and the nature of the image formed.

Consider a dipole with charges +q and -q. Find out the expression of potential energy of the dipole for an external field E.