Question

A light disc made of aluminium (a nonmagnetic material) is kept horizontally and is free to rotate about its axis as shown in the figure. A strong magnet is held vertically at a point above the disc away from its axis. On revolving the magnet about the axis of the disc, the disc will (figure is schematic and not drawn to scale)

• A. rotate in the direction opposite to the direction of magnet motion
• B. rotate in the same direction as the direction of magnet motion
• C. not rotate and its temperature will remain unchanged
• D. not rotate but its temperature will slowly rise

Answer 1

Answer: (B)

rotate in the same direction as the direction of magnet motion

Answer 2

The Correct Option is (B): rotate in the same direction as the direction of magnet motion