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The power of a combination of two lenses X and Y is 5D . If the focal length of lens X be 15 cm .Calculate the focal length of lens Y State
A plano convex lens of refractive index µ1 and focal length f1 is kept in contact with another plano concave lens of refractive index - Sarthaks eConnect | Largest Online Education Community
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optics - Is focal length of Plano Concave lens $f=\cfrac{R}{\mu - 1}$ or $f=\cfrac{R}{1 - \mu}$? - Physics Stack Exchange
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