In Figure., find the position of final image formed.

(a) Under what conditions is the phenomenon of total internal reflection between the critical angle of incidence and the refractive index of the medium. (b) Three lenses of focal lengths+10 cm, -10 cm and + 30 cm are arranged coaxially as in the figure given below. Find the position of the final image formed by the combination.

A point ofject 'O' lies in front of the lens as shown in figure. Find the final position of image formed by the combined lenses.

A point ofject 'O' lies in front of the lens as shown in figure. Find the final position of image formed by the combined lenses.

See the figure. Find the distance of final image formed by mirror

An illuminated point object O is kept 20 cm from a thin convex lens L_(1) of focal length 15 cm as shown below. A thin diverging lens L_(2) of focal length 25 cm is kept co - axial with the first lens and 35 cm from it, as shown in figure below : Find the position of the final image formed by this combination of lenses.

Find the positon of final images formed. (The gap shown in figure of negligible width)

Find the positon of final images formed. (The gap shown in figure of negligible width)

Find out the position of the final image formed by two reflections. Take the first reflection from M_(1) .

Find out the position of the final image formed by two reflections. Take the first reflection from M_(1) .