Question

What do you mean by Lens Formula

Answer 1

Answer:

1/f =1/v - 1/u

The relation between distance of object, distance of image and focal length for a lens is called lens formula. ... Distance of object and image is measure from the optical centre of the lens. The sign for distance is given as per convention. The lens formula is valid for all situations for spherical lens.

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Answer 2

Answer:

A lens formula may be defined as the formula which gives the relationship between the distance of image (v), distance of object (u), and the focal length (f) of the lens. It may be written as: Where, v = Distance of image from optical centre of lens.