If two lenses (convex) are in contact with each other, what happens to the ray after refraction?

If the two lenses are kept in contact than their power is added

Power (P) = P1 + P2.


Hence the power of combination is increased which means that the converging capacity is increased. And the focal length is decreased (because focal length is inversely proportional to the power of lens).


Therefore the ray after refraction will converge at point close to lens than earlier.


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