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Near Point & Far Point

What is the f...

Question

What is the far point for a normal eye?

A

25 cm

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B

1000 m

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C

20 cm

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D

infinity

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Solution

The correct option is D
infinity

The far point of a normal eye is infinity.

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Similar questions

Q. For a normal eye, the far point is at infinity and the near point ofdistinct vision is about 25cm in front of the eye. The cornea of theeye provides a converging power of about 40 dioptres, and the leastconverging power of the eye-lens behind the cornea is about 20 dioptres. From this rough data estimate the range of accommodation(i.e., the range of converging power of the eye-lens) of a normal eye.

Q. Calculate the power of the eye - lens of the normal eye when it is focused at its (a) far point, infinity and (b) near point, 25 cm from the eye. Assume the distance of the retina from the eye - lens to be 2.5 cm.

Name the defect of vision in a person

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b) whose far point is less than infinity

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Q. A simple microscope is rated 5x for a normal relaxed eye. What will be its magnify power for a far sighted man whose near point is 40 cm?

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