Question

define lens ? write lens formula ?​

Answer 1

Explanation:

hi

It is an equation that relates the focal length, image distance, and object distance for a spherical mirror. It is given as, \frac{1}{i} + \frac{1}{o} = \frac{1}{f} i= distance of the image from the lens. o= distance of the object from the lens.

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Answer 2

Answer:

The greater effect a lens has on light rays, the more powerful it is said to be. A powerful converging lens will focus parallel light rays closer to itself and will have a smaller focal length than a weak lens. The power of a lens is given by the equation P=1f P = 1 f .