# NCERT Solutions for Class 10 Science Chapter 11: The Human Eye and the Colourful World

Any exam preparation is a rigorous process that requires an overall understanding of the concepts explained in each chapter.  It can be achieved only by doing an appropriate level of studies and maintaining a tricky approach to get through to the solutions. Here, NCERT books play the most significant role of putting forth the concepts in a simple way for better understanding and offering a number of problems for self assessment.

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In this article we are providing the NCERT solutions for Class 10 Science chapter 10, Human Eye and Colourful World.  Here all the questions are solved with detailed explanation which will make it easy for you to prepare easily and effectively for the class 10 board exams 2019.

All the class 10 Science NCERT solutions have been collated in PDF format which students may easily download totally free.

Some of the questions and their solutions from NCERT Solutions for Class 10: Human Eye and Colourful World, are as follows:

Q. What is the far point and near point of the human eye with normal vision?

Sol. The far point of the normal human eye is infinity. The far point of the eye is the maximum distance to which the eye can see the objects clearly.

The near point of the eye is the minimum distance of the object from the eye, which can be seen distinctly without strain. For a normal human eye, this distance is 25 cm.

Q. A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected?

Sol. He is unable to see distant objects clearly. He is suffering from myopia. This defect can be corrected by using a concave lens.

CBSE Class 10 Science Syllabus 2018-2019

Q. The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to

(a) Presbyopia

(b) Accommodation

(c) Near-sightedness

(d) Far-sightedness

Sol. (b) Accommodation

Q. What happens to the image distance in the eye when we increase the distance of an object from the eye?

Sol. When we increase the distance of an object from the eye, the image distance in the eye does not change. The increase in the object distance is compensated by the change in the focal length of the eye lens. The focal length of the eyes changes in such a way that the image is always formed at the retina of the eye.

Get the complete the NCERT solutions for Class 10: Human Eye and Colourful World, from the following link:

Class 10 Science NCERT Chapter: Human Eye and Colourful World

Before solving the questions given in the Class 10 Science NCERT chapter- Human Eye and Colourful World, students should thoroughly read this chapter to grasp all the concepts explained in it. This will help you understand the problem discussed in a question and then come with an appropriate answer.

Main topics discussed in Class 10 Science chapter: Human Eye and Colourful World are:

• Structure and working of the human eye
• Power of accommodation
• Defects of vision and their correction
• Refraction of light through a prism
• Dispersion of white light by a glass prism
• Atmospheric refraction
• Scattering of light
• Tyndall effect and its applications