List of top Physics Questions on Images Formed By Lenses asked in NEET (UG)

In a concave lens, a ray of light emanating from the object parallel to the principal axis of the lens, after refraction: ____.

In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to one lens will be, respectively:

Two similar thin equi-convex lenses, of focal length \(f\) each, are kept coaxially in contact with each other such that the focal length of the combination is \(F_1\). When the space between the two lenses is filled with glycerin (which has the same refractive index (\(\mu=-1.5\)) as that of glass) then the equivalent focal length is\( F_2.\) The ratio \(F1: F2\) will be: 

A plano-convex lens fits exactly into a plano- concave lens. Their plane surfaces are parallel to each other. If lenses are made of different materials of refractive indices, $μ_1$ and $μ_2$ and R is the radius of curvature of the curved surface of the lenses, then the focal length of the combination is