1.

A doctor has prescribed a corrective lens of power +1.5D. Find the focal length of the lens. Is the prescribed lens diverging or converging?​

Answer»

f=0.66m or 66cmExplanation:D=1/f f=1/D f= 1/+1.5=+0.66m or +66cmAs the focal length is POSITIVE the LENS is CONVERGING or CONVEX



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