Physics - Geometrical Optics Question with Solution | TestHub

Use the properties of reflection to trace the rays from the point source to the mirror and then to the screen. Determine the range of angles at which light from the source strikes the mirror. Calculate the corresponding points where these reflected rays hit the screen. Use similar triangles to find the required length. The height of the source and the distance to the mirror are crucial.

The length on the screen is $2H$.