Far point of a normal eye is situated at-25 cm-400 cm-50 cm-Infinity-

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Physics

Far Point

Far point of ...

Question

Far point of a normal eye is situated at:

25 cm

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400 cm

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50 cm

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Infinity

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Solution

The correct option is D
Infinity

Far point of human eye is infinity. (We can see stars, thousands of light years away from the earth)

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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. An object is placed at a distance of 30 cm from a converging lens of focal length 15 cm. A normal eye (near point 25 cm, far point infinity) is placed close to the lens on the other side. (a) Can the eye see the object clearly? (b) What should be the minimum separation between the lens and the eye so that the eye can clearly see the object? (c) Can a diverging lens, placed in contact with the converging lens, help in seeing the object clearly when the eye is close to the lens?

Q. A short-sighted person has a near point of 15 cm and a far point of 40 cm.
(a) Can he see clearly an object at a distance of :
(i) 5 cm ? (ii) 25 cm ? (iii) 50 cm ?
(b) To see clearly an object at infinity, what kind of spectacle lenses does he need ?

The near point of a long-sighted person is 50 cm from the eye.
(a) Can she see clearly an object at :
(i) a distance of 20 cm ? (ii) at infinity ?
(b) To read a book held at a distance of 25 cm, will she need converging or diverging spectacle lenses ?

Q. The near point of a normal eye is 25 cm and the far point is infinity.

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Far point of a normal eye is situated at:

The correct option is D Infinity Far point of human eye is infinity. (We can see stars, thousands of light years away from the earth)

The correct option is D
Infinity

Far point of human eye is infinity. (We can see stars, thousands of light years away from the earth)