Single Choice

For a normal eye, the cornea of eye provides a converging power of 40 D and the least converging power of the eye lens behind the cornea is 20 D. Using this information, the distance between the retina and the cornea-eye lens can be estimated to be

A5 cm
B2.5 cm
C1.67 cm
Correct Answer
D1.5 cm

Solution

$$\displaystyle P_{eff}=40\:D+20\:D=60\:D$$

$$\displaystyle f=\dfrac{100}{P_{eff}}$$

=> $$f=\dfrac{100}{60} = 1.67$$

SIMILAR QUESTIONS

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