If focal length of human eye is 2 cm then find the focal length of contact lens such that a combined focus system of focal length 2.5 cm is obtained after using contact lens.

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If focal length of human eye is 2 cm then find the focal length of contact lens such that a combined focus system of focal length 2.5 cm is obtained after using contact lens.
27
Oct
If focal length of human eye is 2 cm then find the focal length of contact lens such that a combined focus system of focal length 2.5 cm is obtained after using contact lens. If focal length of human eye is 2 cm then find the focal length of contact lens such that a combined [...]
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