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Power of a Lens

The power of ...

Question

The power of three lenses A, B, and C are 1, 2 and 3 dioptre respectively. What is the power of the combination of these lenses?

A

9 dioptre

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B

6 dioptre

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C

3 dioptre

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D

2 dioptre

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Solution

The correct option is B 6 dioptre
Power of a combination of lens is the addition of power of each lens.

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