Concept:Lenz’s law: the direction of the induced current is such that it opposes the change producing it.
Explanation:The coil
X is being moved away from the metal bar, so the magnetic flux linking the coil is decreasing.
To oppose this decrease, the induced current in
X must try to bring the coil closer to the bar.
From the current direction shown, the face of the coil nearest to
Y becomes a south pole.
A south pole will attract a north pole of the stationary bar.
Therefore, the end
Y of the metal bar must be a north pole.
The bar is therefore a magnet, not a non-magnet, and it attracts rather than repels the coil.
Answer:B. Y is a north pole