Question

Which of the following ray diagrams is not correct?

• A.

  

• B.

  

• C.

  

• D.

  

Answer 1

The correct option is C

Correct option- C

The ray diagram given in option C is incorrect.

If the incident ray is parallel to the principal axis, it should appear to pass through the focus after reflection as the focus of a convex lens is on the right side, unlike the concave lens.

1. On the screen, the virtual image is not produced. After reflection, incident rays that are parallel to the principal axis appear to diverge from a common point on the principal axis, which is referred to as the principal focus of a convex mirror.
2. In the case of a convex lens, a ray of light that travels towards the center of curvature is reflected back in the same direction.
3. After reflection, a ray of light traveling towards the principal focus of a convex mirror becomes parallel to the principal axis.

Hence option C is correct.