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Lens Formula and Magnification

A plano conve...

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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 index u1 and u2 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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Q. A plano-convex lens fits exactly into a plano-concave lens. Their plane surface are parallel to each other. If lenses are made of different materials of refractive indices

μ_{1}

μ_{2}

and R is the radius of curvature of the curved surface of the lenses, then the focal length of the combination is

Q. A plano-convex lens fits exactly into plano-concave lens as shown in figure. Their plane surfaces are parallel to each other. If the lens are made of different materials of refractive indices

1.6

1.5

respectively. If

R

is the radius of curvature of curved surfaces of lenses. Then the focal length of the combination

Q. 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 index

μ_{1}

μ_{2}

and R is the radius of curvature of the curved surfaces of the lenses, then the focal length of the combination is:

Q. A plano-convex lens (focal length

f_{2}

, refractive index

μ_{2}

, radius of curvature

R

) fits exactly into a plano-concave lens (focal length

f_{1}

, refractive index

μ_{1}

, radius of curvature

R

). Their plane surfaces are parallel to each other. Then, the focal length of the combination will be :

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