Re: General doubt
Do you mean in the same circuit, if you reverse the diode, will it function the same? Of course not. And it differs if your circuit voltage supply is AC or DC.
In simple words, any diode has a threshold voltage ( usually around 0.7V for Silicon diodes), so if you apply a voltage higher than that threshold voltage across the diode, in the right direction, that is from anode to cathode, the diode will simply behaves as a short circuit, or more specific, as a DC battery of 0.7V. If you apply a voltage less than the threshold, or apply the voltage from cathode to anode. the diode will simply behave as an open circuit.
So, if you are using your diode in a DC only circuit, if the voltage across the diode is high enough to make it ON (higher than threshold voltage), then if u reverse the diode, it will sure be off.
But if you are using the diode in an AC circuit, the diode will probably work in both directions. If in a case, the diode is ON, this will be probably for a part only of the cycle, the part of the voltage sine wave where the voltage exceeds the threshold, then if u reverse the diode, there will probably be another part of the sine wave in the opposite half which will exceed the threshold too, but in the opposite direction. So, may b the diode will work in both directions, but surely the output waveform will not be the same, at least reversed in direction.
I hope this helps you somehow