Draw a ray diagram in each of the following cases to show what happens after reflection to the incident ray when (a) it is parallel to the principal axis and falling on a convex mirror.(b) it is falling on a concave mirror while passing through its principal focus.(c) it is coming oblique to the principal axis and falling on the pole of a convex mirror.

(a) When the incident ray is parallel to the principal axis and falling on a convex mirror, then it gets diverged and appears to be coming from its focus $(F)$ after reflection from the mirror.

(b) When the incident ray is falling on a concave mirror while passing through its principal focus $(F)$, then it becomes parallel to the principal axis after reflection.

(c)  When the incident ray is coming oblique to the principal axis and falling on the pole $(P)$ of a convex mirror then it gets reflected back making the same angle with the principal axis.

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Updated on: 10-Oct-2022

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