The Attempt at a Solution
As the magnet moves in and out of the coil , flux linked with the coil changes , as a result an EMF is induced in the coil . A current flows in the coil . The current depends on how fast the magnet is moved . Current will vary in the coil . I think Options 1) and 4) can be ignored .
I don't understand how the induced current depends upon the frequency with which magnet is moved .
How do we choose between 2) and 3) ?