Question

What happens to the shadow on the screen when the distance between the source of light and the object decreases?

Answer 1

Hint:When the light source is nearer to the object then the light rays need to bend more to pass across the edges of the object than the object placed near to the light source.

Complete step by step solution:
-To begin with, we will discuss some things about the pinhole camera. The theory of rectilinear propagation of light is employed by Pinhole cameras. A transparent image is created on the screen when you position an object in front of the pinhole camera. The picture created by the camera with the pinhole is reversed. Since the pinhole camera's aperture is tiny (near in diameter), just one ray passes through the pinhole from each point on the object and continues on to the screen. Thus, between the points on the object and the points on the screen, there is one-to-one coordination.
-If we decrease the distance between the source of light and the object, then the size of the shadow will increase because the amount of light falling on the screen will decrease. However, if the distance is increased, then the size of the shadow will decrease as the light moves away in the light because more light falls on the screen.

Note: It is important to remember that the size of the shadow is dependent on the light rays receiving from the source. If the distance between the light source and the object increases by a very large factor, then the shadow may completely disappear as the light rays coming from a very distant point can’t make an effect on the object.