Compare the magnetic field produced by a solenoid with that of a bar magnet by drawing respective diagrams.

Hint: A bar magnet is a rectangular object made up of steel/ferromagnetic substance having 2 poles – north and south, having permanent magnetic properties. A solenoid is a cylindrical tube mounted by the conducting wire and is a type of electromagnetic.

Complete answer:
The poles of a bar magnet are fixed and cannot be altered, whereas, the poles of a solenoid can be altered.
The magnetic lines of the magnetic field are stronger at the poles than at the middle part in case of both the bar magnet and the solenoid.
The strength of the magnetic field of the bar magnet is constant, whereas, the strength of the magnetic field of the solenoid depends on the amount of the electric current passed through it.

Consider the diagrams of the magnetic field produced by the solenoid and the bar magnet.

As the property of magnetic lines of force, they emerge from the north pole and terminate at the south pole in both the bar magnet and the solenoid.
At the point of the axial, the magnetic field is the same for the bar magnet and the solenoid.
When a bar magnet is cut into pieces, the strength of the magnetic field produced by the whole bar magnet will be equal to the strength of the magnetic field produced by pieces of the bar magnet. Whereas, in the case of the solenoid, the strength of the magnetic field weakens when cut into pieces.

Note:
The things to be on your figure tips for further information on solving these types of problems are:
A bar magnet is a permanent magnet, whereas a solenoid is an electromagnet (a type of magnet which produces a magnetic field when the current passes through it).