Two plane mirrors, AB and BC are set up at right angles. ON is normal to the mirror AB. A ray of light XO is incident on AB as shown. It’s reflected at mirror AB and then travels on to the mirror BC where it is again reflected. Write down the following values:...

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?