Question

draw the figure illustrating the behaviour of rays passing Parallel to the principal axis of a concave lense​

Answer 1

• Please refer the picture attached

Answer 2

To draw:

Figure illustrating the behaviour of rays passing parallel to the principal axis of a concave lens.

Solution:

First of all , we need to know a few facts about ray diagram formation in case of a concave lens:

• Let's consider the object to be located at infinity.

• While drawing ray-diagrams , we shall consider paraxial rays, i.e. the rays will be parallel and close to the principal axis.

• Such paraxial rays after getting refracted from the lens will move in such a way such that backward extension of the refracted Ray will meet at the principal focus.

• Hence , a pinpoint image , virtual image will be formed.

$\star$ Hope It Helps.