Computer Applications
State the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain your answer with the help of suitable ray diagrams.
Answer
The two convenient rays, chosen to construct the image by a spherical mirror are —
(i) A ray that passes through the center of curvature.
A line joining the centre of curvature to any point on the surface of mirror is normal to the mirror at that point, therefore a ray AD passing through the center of curvature C (or appearing to pass through through the centre of curvature C) is incident normally on the spherical mirror.
Since it's angle of incidence is zero, therefore the angle of reflection will also be zero and the ray AD gets reflected along it's own path DA as shown below:
(ii) A ray parallel to the principal axis.
A ray of light AD incident parallel to the principal axis, after reflection passes either through the focus F(in a concave mirror) or will appear to come from the focus F (in a convex mirror) along DB as shown below:
Related Questions
Figure shows a concave mirror with it's pole at P, focus F and center of curvature C. Draw ray diagram to show the formation of image of an object OA.
Complete the following diagrams shown in figure by drawing the reflected ray for each of the incident ray A and B.
Complete the following diagrams in figure by drawing the reflected rays for the incident rays 1 and 2.
Figure shows a concave mirror with it's pole at P, focus F and center of curvature C. Draw ray diagram to show the formation of image of an object OA.
