Can the lens formula be written as 1 over f equals 1 over v minus 1 over u If so why the negative sign?

Anonymous

∙ 12y ago

Updated: 8/20/2019

This is an approximate formula.

For a biconvex lens, the two radii of curvature are measured in opposite directions and you therefore have opposite signs for u and v.

Wiki User

∙ 12y ago

What else can I help you with?

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no it equals a positive

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