establish lens equation and establish lens market formulas


Asked by anindita00002 | 18th Feb, 2019, 01:18: PM

Expert Answer:

As per our policy only one question is going to be answered in one url. Derivation of lens formula 
convex lens formula


Let AB represent an object placed at right angles to the principal axis at a distance greater than the focal length f of the convex lens. The image A1B1 is formed beyond 2F2 and is real and inverted.

OA = Object distance = u

OA1 = Image distance = v

OF2 = Focal length = f

OAB and OA1B1 are similar

But we know that OC = AB

 the above equation can be written as

From equation (1) and (2), we get

Dividing equation (3) throughout by uvf

Answered by Ankit K | 18th Feb, 2019, 10:25: PM

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