Geometrical OpticsHard

Question

A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in sucha way that its end closer to the pole is 20 cm away for the mirror. The length of the image is

Options

A.5 cm
B.10 cm
C.15 cm
D.2.5 cm

Solution


                 
v1 = - 20cm ; u2 = - 10 cm
v5 = - 15 cm
Similarly v1 = - 20 cm
Length of image is V2 - V1 = 5 cm

Create a free account to view solution

View Solution Free
Topic: Geometrical Optics·Practice all Geometrical Optics questions

More Geometrical Optics Questions

A symmetric double convex lens is cut in two equal parts by a plane perpendicular to the principal axis, If the power of...A point objects O moves from the principle axis of a converging lens in a direction OP. I the image of O, will move init...An object placed at a distance of a 9cm. from the first principal focus of a convex lens produces a real image at a dist...A triangular prism of glass is shown in the fig. A ray incident normally to the one face is totally reflected if θ ...If the focal length of objective lens is increased then magnifying power of...