Question

Two thin lens of power +3.5D and - 2.5D are placed in contact. Find the power and focal length, if the lens are in combination. (p = + 10, f = 1m)

Answer 1

Answer:

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Explanation:

Therefore, if two thin lenses of power +3.5D and -2.5D are placed in contact then the power and focal length of the lens combination will be 100m.

Answer 2

Answer:

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