Question

In the above figure, the parallel rays meet/appear to meet ___.

• A. at infinity
• B. at $F_2$
• C. at $F_1$
• D. at $2F_2$

Answer 1

The correct option is C

at $F_1$

In concave lens the parallel beam of light appears to diverge from a point ($F_1$) on the principal axis. This point ($F_1$) is called the principal focus.