The range of vision of a normal human eye is from

a)
100 m to 25 cm

b)
infinity to 25 m

c)
1 km to 25 cm

d)
25 cm to infinity

Correct answer is option 'D'. Can you explain this answer?

Question

The range of vision of a normal human eye is froma)100 m to 25 cmb)infinity to 25 mc)1 km to 25 cmd)25 cm to infinityCorrect answer is option 'D'. Can you explain this answer?

Answer

Because the far point of the eye is infinity one explation can be that we can see sun and moon standing on earth .this distance is much much more than focal length of our eye therefore it is considered to be infinity. we know that crystalline lens in our eyes have a power to accommodate focal length but it can't reduce focal length below 25 cm therefore the near point of our eye is 25 cm

Answer

'D' is correct because the far point of an human eye is to infinity and near point of an human eye is 25 cm.

Answer

Range of Vision of a Normal Human Eye

The range of vision of a normal human eye refers to the distance over which a person can see objects clearly without any visual aids. It is the maximum distance at which an object can be seen with normal visual acuity. The correct answer to this question is option 'D', which states that the range of vision of a normal human eye is from 25 cm to infinity. Let's understand this answer in detail:

Explanation:

The range of vision of a normal human eye can be divided into two parts: near vision and far vision.

Near Vision:
- Near vision refers to the ability to see objects that are close to the eye, typically within arm's length.
- The near point of vision is the closest distance at which an object can be seen clearly without any visual aids.
- For a normal human eye, the near point of vision is around 25 cm, which means that objects closer than 25 cm appear blurred.

Far Vision:
- Far vision refers to the ability to see objects that are far away from the eye, typically beyond arm's length.
- The far point of vision is the farthest distance at which an object can be seen clearly without any visual aids.
- For a normal human eye, the far point of vision is considered to be at infinity, which means that objects at a very large distance can still be seen clearly.

Range of Vision:
- Based on the near point of vision and the far point of vision, the range of vision of a normal human eye can be defined as the distance from the near point to the far point.
- In this case, the range of vision is from 25 cm (near point) to infinity (far point).
- It means that a person with normal vision can see objects clearly from a distance of 25 cm to any distance beyond that, as long as the object is within the capabilities of the eye.

Conclusion:
The range of vision of a normal human eye is from 25 cm to infinity. This means that a person with normal vision can see objects clearly from a distance of 25 cm to any distance beyond that.

Top Courses for Class 10View all

Science Class 10

Social Studies (SST) Class 10

Mathematics (Maths) Class 10

Past Year Papers for Class 10

English Class 10

Top Courses for Class 10

Top Courses for Class 10

Related Content

About Class 10

Class 10 Study Material

Class 10 All Subjects

NCERT Textbook Solutions

Other Classes

Important Links

Company