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

by aglasem
August 28, 2021
in 10th Class
Reading Time: 1 min read
0
NCERT Solutions

NCERT Solutions Class 10 Science Chapter 11 The Human Eye and the Colourful World – Here are all the NCERT solutions for Class 10 Science Chapter 11. This solution contains questions, answers, images, explanations of the complete Chapter 11 titled The Human Eye and the Colourful World of Science taught in class 10. If you are a student of class 10 who is using NCERT Textbook to study Science, then you must come across Chapter 11 The Human Eye and the Colourful World. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 10 Science Chapter 11 The Human Eye and the Colourful World in one place.

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

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Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Science for Class 10 so that you can refer them as and when required. The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students solving difficult questions.

For a better understanding of this chapter, you should also see summary of Chapter 11 The Human Eye and the Colourful World , Science, Class 10.

Class 10
Subject Science
Book Science
Chapter Number 11
Chapter Name

The Human Eye and the Colourful World

NCERT Solutions Class 10 Science chapter 11 The Human Eye and the Colourful World

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Class 10, Science chapter 11, The Human Eye and the Colourful World solutions are given below in PDF format. You can view them online or download PDF file for future use.

The Human Eye and the Colourful World Download

NCERT Solutions for Class 10 Science Chapter 11 Human Eye and Colourful World Download

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Question & Answer

Q.1: What is meant by power of accommodation of the eye?

Ans : When the ciliary muscles are relaxed, the eye lens becomes thin, the focal length increases, and the distant objects are clearly visible to the eyes. To see the nearby objects clearly, the ciliary muscles contract making the eye lens thicker. Thus, the focal length of the eye lens decreases and the nearby objects become visible to the eyes. Hence, the human eye lens is able to adjust its focal length to view both distant and nearby objects on the retina. This ability is called the power of accommodation of the eyes.

Q.2: A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision?

Ans : The person is able to see nearby objects clearly, but he is unable to see objects beyond 1.2 m. This happens because the image of an object beyond 1.2 m is formed in front of the retina and not at the retina, as shown in the given figure. To correct this defect of vision, he must use a concave lens. The concave lens will bring the image back to the retina as shown in the given figure.

Q.3: What is the far point and near point of the human eye with normal vision?

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

Q.4: 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?

Ans : A student has difficulty in reading the blackboard while sitting in the last row. It shows that he is unable to see distant objects clearly. He is suffering from myopia. This defect can be corrected by using a concave lens.

Q.5: The human eye can focus on objects at different distances by adjusting the focal length of the eye lens. This is due to 
(a) presbyopia. 
(b) accommodation.
(c) nearsightedness. 
(d) farsightedness.

Ans : (b) Human eye can change the focal length of the eye lens to see the objects situated at various distances from the eye. This is possible due to the power of accommodation of the eye lens.

NCERT / CBSE Book for Class 10 Science

You can download the NCERT Book for Class 10 Science in PDF format for free. Otherwise you can also buy it easily online.

  • Click here for NCERT Book for Class 10 Science
  • Click here to buy NCERT Book for Class 10 Science

All NCERT Solutions Class 10

  • NCERT Solutions for Class 10 English
  • NCERT Solutions for Class 10 Hindi
  • NCERT Solutions for Class 10 Maths
  • NCERT Solutions for Class 10 Science
  • NCERT Solutions for Class 10 Social Science
  • NCERT Solutions for Class 10 Sanskrit

All NCERT Solutions

You can also check out NCERT Solutions of other classes here. Click on the class number below to go to relevant NCERT Solutions of Class 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.

Class 1 Class 2 Class 3
Class 4 Class 5 Class 6
Class 7 Class 8 Class 9
Class 10 Class 11 Class 12

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