When a $p-n$ diode is reverse biased,then

If the voltage across the diode in the given circuit is $0.5 \ V$,then the current flowing through the circuit is ...... $mA$.

Consider the junction diode as ideal. The value of current flowing through $AB$ is

Which of the following statements is not correct when a junction diode is in forward bias?

The dominant mechanisms for motion of charge carriers in forward and reverse biased silicon $P-N$ junctions are

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: $A$ diode under reverse-biased condition provides very small current which is nearly independent of voltage until a critical limit at which the current increases drastically.
Reason $R$: Below the critical voltage limit,only majority charge carriers flow which increases drastically above critical voltage.