Out of the two lenses, one concave and the other convex, state which one will show the divergent action on a light beam. Draw diagram to illustrate you answer.
Concave lens will show the divergent action on a light beam.
A parallel oblique beam of light falls on a (i) convex lens, (ii) concave lens. Draw a diagram in each case to show the refraction of light through the lens.
(a) An object is placed 10 cm from a lens of focal length 5 cm. Draw the ray diagrams to show the formation of image if the lens is (i) converging, and (ii) diverging. (b) State one practical use each of convex mirror, concave mirror, convex lens and concave lens.
A beam of light incident on a thin concave lens parallel to its principle axis diverges and appears to come from a point F on the principal axis. Name the point F. Draw a ray diagram to show it.