The south pole of a magnet is brought near to a solenoid, which is connected to an ammeter. As the magnet is moved towards and away from the point P, the ammeter shows deflection. What magnetic pole is produced at P when the south pole of the magnet is brought towards and away from the solenoid.

This question appears incomplete

Explanation:

However, this question seeks to seek our knowledge of Lenz law which states that the current produced by an induced emf (electromotive force) moves/flows in the direction opposite to the change in flux that induced the emf.

From this law, it can be noted from the question that the magnetic pole produced (at P), when the south pole of the magnet is brought towards the solenoid, is the south pole while the magnetic pole produced (at P), when the south pole of the magnet is taken away/changed from the solenoid, is the north pole.

It should be noted that solenoid is an electromagnetic device (and can hence be used to induce emf) that can convert electrical energy to mechanical energy.

this is a good question! i'll do some research and come back when i have the answer!