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The far point of a myopia eye is 60 cm. Find the focal length of the lens used to correct it. |
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Answer» Solution :Given, far POINT = v = -60 cm = -0.6 cm, Object distance `= u = -oo`. USING lens formula , `(1)/(v)-(1)/(u) = (1)/(f) = (1)/((-0.6)) = (1)/(f)` So, FOCAL LENGTH = f = -0.6 m = -60 cm. |
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