Q16 of 84 Page 322

When two or more lenses are placed in contact, what will be their combined power?

When two or more lenses each of power P1, P2, P3, P4… Pn . are placed in contact with each other as shown in the figure below.


Then the combined power of the combination is the sum of all individual powers.


⇒ P = P1 + P2 + P3 + P4 + …..+ Pn


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