Two lenses producing linear magnifications and are joined together to form a lens combination. What is the magnification of the combination?
Important Questions on Refraction of Light at Spherical Surfaces : Lenses
Two thin lenses of and powers are placed in contact with each other. Find the power, focal length and nature of this combination.
Draw ray diagram to illustrate the formation of a real image after refraction of light at an air-glass spherical surface.
Explain the meaning of the first and the second focus of a convex lens, drawing separate ray-diagrams.
Define the first focus of a concave lens, giving a suitable ray-diagram.
A lens is made of two different materials of refractive indices and , as shown. A point object is placed on the principal axis. How many images of the object will be formed by the lens (neglecting spherical and chromatic aberration)?
