AP EAPCET 07-Jul-2022 Shift 1 Paper

In an ideal diode V−I graph in forward bias is :

So, forward resistance,

∆V

∆I

=0
In a half wave rectifier diode resists negative half of input cycle. Hence, current only flows for positive half cycle.
When breakdown occurs, potential drop across zenner diode becomes constant. Hence, it acts as a constant voltage source.
Hence, all statements are correct.