A ray of light going towards the focus of a convex mirror becomes parallel to the principal axis after reflection from the mirror. Draw a labelled diagram to represent this situation.
Ray Diagram-
A ray of light going towards the focus of a convex mirror becomes parallel to the principal axis after reflection on the mirror.
Explanation
According to the third rule of image formation by a convex mirror, when a ray of light going towards the focus of a convex mirror becomes parallel to the principal axis after reflection on the mirror.
This is just the reverse case of the first rule, which is "A ray of light which is parallel to the principal axis of a convex mirror, appears to be coming from its focus after getting reflected from the mirror."
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- (a) With the help of a labelled diagram explain how a convex lens converges a beam of parallel light rays. Mark the principal axis, optical centre, principal focus and focal length of the convex lens on the diagram.(b) State whether convex lens has a real focus or a virtual focus.(c) List some things that convex lens and concave mirror have in common.
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