Questions
The refractive index of a converging lens is 1.4. What will be the focal length of this lens if it is placed in medium of same refractive index? Assume the radii of curvature of the faces of lens and respectively.
detailed solution
Correct option is D
Lens Makers Formula, 1f=n2n1−11R1−1R2 If n1=n2, then ⇒1f=0 ⇒f→∞Talk to our academic expert!
Similar Questions
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 and and R is the radius of curvature of the curved surface of the lenses, then the focal length of the combination is
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