Question

Which of the following light rays behaves correctly when it passes through the converging lens?

• A. I
• B. II
• C. III
• D. IV

Answer 1

The correct option is C III

We know,

In a convergent lens,

Ray from focus is parallel to principal axis and vice versa.

$I$ is incorrect as it should be parallel to principal axis after refraction.

$II$ is incorrect as it should also be parallel to principal axis before refraction.

$IV$ is incorrect as it should pass through focus before refraction.

Hence only $\left(III\right)$ is the correct answer.

Option $\text{C}$ is the correct answer