Important Terms Related to Spherical Lens

Q.

Explain the optical center of a lens with the help of proper diagrams.

Q.

In the given figure, where do the diverging rays seem to meet?
($F_1$ , $F_2$ are the primary focus of the lens)

1. $2F_1$

2. $F_2$

3. $F_1$

4. $2F_2$