what is lens mark formula
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Using the positive optical sign convention, the lens maker's formula states

where f is the focal length, n is the index of refraction, and  and  are the radii of curvature of the two sides of the lens.
Lens, Thin Lens Formula

where f is the focal length, n is the index of refraction, and  and  are the radii of curvature of the two sides of the lens.
Lens, Thin Lens Formula
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it's a formula which is related to optics which is basically a part of physics
actually, It is a relation that connects focal length of a lens to radii of curvature of the two surfaces of the lens and refractive index of the material of the lens.
actually, It is a relation that connects focal length of a lens to radii of curvature of the two surfaces of the lens and refractive index of the material of the lens.
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