Incident rays on a plane mirror when a real image is formed:

When a light ray falls on a plane mirror, the incident rays can be categorized into four possibilities: false statement, converging, diverging, or parallel. Let's analyze each of these possibilities in detail.

a) Statement is false:
If the statement is false, it means that the incident rays are not responsible for forming a real image on the plane mirror. In this case, the incident rays may not be reflecting off the mirror or they may not be interacting with the mirror in a way that produces a real image. Therefore, this option is not applicable.

b) Converging incident rays:
Converging incident rays refer to when the light rays fall on the mirror and converge towards a point. In this case, the light rays converge before they reflect off the mirror surface. When these converging rays reflect off the plane mirror, they continue to converge on the other side of the mirror. Consequently, a real image is formed behind the mirror, as the converging rays meet at the point where the image is formed.

c) Diverging incident rays:
Diverging incident rays occur when the light rays fall on the mirror and diverge away from each other. These rays diverge before reflecting off the mirror surface. When the diverging rays reflect off the plane mirror, they appear to come from a virtual image point behind the mirror. This virtual image cannot be projected onto a screen as it does not physically exist, and the reflected rays do not actually converge at a point.

d) Parallel incident rays:
Parallel incident rays refer to when the light rays fall on the mirror and remain parallel to each other. In this case, the parallel rays reflect off the mirror surface and continue to remain parallel to each other. Consequently, the reflected rays appear to originate from a virtual image point behind the mirror. Similar to diverging rays, this virtual image cannot be projected onto a screen as it does not physically exist.

In summary, when a real image is formed by a plane mirror, the incident rays can be either converging or parallel. Converging rays converge before and after reflection, while parallel rays remain parallel before and after reflection. Diverging rays do not form a real image, and the option of a false statement is irrelevant as it does not contribute to the formation of a real image.

May be b) converging.