**Q2: **

The diagrams show a light ray from a point at the top
of an object to a point on a line perpendicular to the height of the
object, ,
that intersects the base of the object. In the
diagram where the light ray travels directly from to , the
angle subtended by the object is .
In the other diagram, the light
ray passes through a lens. The lens forms a virtual image that has a height
. The angle subtended by the image is .