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a doctor has prescribed a corrective lens of power 1.5D .find the focal length of this lens.is the prescribed lens converging or diverging |
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Answer» Answer: EXPLANATION:power of the lens= +1.5D Using P=100/f f=100/p f=100/1.5 =1000/15= 66.67m As the focal LENGTH is POSITIVE, it is CONVEX lens. Hence, It is a CONVERGING lens. |
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