For obtaining the maximum power from a solar cell, it should be operated in

The given graph represents $V$–$I$ characteristic for a semiconductor device.

Which of the following statements is correct?

Identify the semiconductor devices whose characteristics are given below in the order $(a), (b), (c),(d)$:

The principle in which a solar cell operates

Identify the semiconductor devices whose characteristics are given below in the order $\left(1\right)\text{,} \left(2\right)\text{,} \left(3\right)\text{,} \left(4\right)$.

The given graph represents $V-I$ characteristic for a semiconductor device.

Which of the following statement is correct?