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 μ1 and μ2 and R is the radius of curvature of the curved surfaces of the lenses, then the focal length of the combination is:

A plano convex lens fits exactly into a plano concave lens. Their plan

1.	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 μ1 and μ2 and R is the radius of curvature of the curved surfaces of the lenses, then the focal length of the combination is:
Answer» 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 $μ_{1}$ and $μ_{2}$ and R is the radius of curvature of the curved surfaces of the lenses, then the focal length of the combination is:

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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 μ1 and μ2 and R is the radius of curvature of the curved surfaces of the lenses, then the focal length of the combination is:

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