Question

Using suitable diagrams show that size of shadow formed, depends on relative position of the source of light and the opaque object.

Answer 1

It is clear from the figure that by increasing the distance between the source of light and the opaque body the size of the shadow decreases. And if the distance between the source of light and the opaque object decreases the size of the shadow becomes light. Thus we can say that the size of shadow formed depends on the relative position of source of light and the opaque object.