Ray Optics and Optical Instruments

Question: An eye specialist prescribes spectacles having a combination of convex lens of focal length 40 cm in contact with a concave lens of focal length 25 cm. The power of this lens combination in diopters is



1) + 1.5
2) – 1.5
3) + 6.67
4) – 6.67
Solution: Explanation: No Explanation
Human Eye and Lens Camera

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