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For a normal eye, the cornea of eye prov...

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 distacne between the retina and the cornea-eye lens can be estimated to be

A

5 cm

B

2.5 cm

C

1.67 cm

D

1.5 cm

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TARGET PUBLICATION-OPTICS-EXERCISE
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  2. By placing a comvex lens of focal length equal to 15.0 cm between an o...

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  3. For a normal eye, the cornea of eye provides a converging power of 40 ...

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  4. The focal length of a plano-convex lens is f and its refractive index ...

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  5. A convex lens is made of a glass of refractive index 1.5. The radius o...

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  6. Three thin lenses are combined by placing them in contact with each ot...

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  7. When image is fomred by reflaction, the field of veiw is maximum for

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  9. An infinitely long bar lies alont the adis of cancave mirror of focal...

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  10. Radius of the circle of least confusion is called as .

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  11. Assertion : If objective and eye lens of a mcroscope are interchanged ...

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  12. A convex lens focal lenghts 30 cm made of glass of refractive index 1....

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  13. Magnifying power of a telescope in normal adjustment when final images...

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  14. Two plano-concave lenses (1 and 2) of glass of refractive index 1.5 ha...

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  15. Assertion : If radius of curvature of mirror is doubled, focal length ...

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  16. Assertion : A dentist uses a convex mirror to examine a small cavity i...

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  17. For a given compound microscope, increase in length of tube

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