NCERT science solutions class 10 The Human Eye and The Colorful World

we will share some important notes on the eye structure, working of the human eye, and its defects. We will also discuss how these are corrected by using various lenses. So, let’s start with the human eye.

The human eye

The Cornea is the front part of the eye. It is expanded towards outside and made up of a transparent substance. It is convex in shape and the light which comes to eye is enters through the cornea.
Iris is behind the cornea and flat in shape, colored, and usually ring shape membrane.
Pupil of the eye is the hole in the middle of the eye. As there is no reflection of light through the pupil hence it is black in color.
A transparent, soft, flexible jelly like material is called eye-lens. The shape can be changes due to the flexibility which focus light on the retina.
The eye-lens is held in position by suspensory ligaments.One end is attached to the eye-lens and other to ciliary muscle.
The screen on which the image is formed in the eye is called Retina.
Blind spot is a small area of the retina insensitive to light where the optic nerve leaves the eye.

Working of the Eye

The eye consists of a convex lens called eye-lens and a screen called Retina. The eye-lens forms a real image of the objects on the retina of the eye and we are able to see the objects.

In the eye, a convex lens called eye lens forms a real and inverted image of an object on the light sensitive screen called retina. The light rays coming from the object enter through the cornea of the eye, pass through the pupil of the eye and fall on the eye-lens. When the image falls on retina these light sensitive cells get activated and generate electric signals. The retina sends these electric signals to the brain through the optic nerves and gives rise to the sensation of vision.

HD-quality animated videos are available on the human eye and its structure, kindly click at Class 10 Science notes.

Continue ....

Call us : 8800999280/8800999284

Comments

Lessons-Worksheets-Question Papers-CBSE Class 2 English

Lessons-Worksheets-Question Papers-CBSE Class 2 English CBSE 2nd Class English – One and Many In this blog, we share the spelling rules used in the concept of One and Many. When there is only one of a naming word (noun), it is said to be a singular noun . When a noun shows more than one, it is said to be in the plural . We can add –S, -es, -ves or ies to show that there is more than one noun. For example, we say many birds, four biscuits, six brushes. But for the students of Class 2 , it’s very difficult and confusing to understand where to use s , es, ves or ies in the form of many. Don’t worry, it looks difficult, but it is very easy as in grammar each concept has a set of rules that need to practice. Noun ending with –s, -x, -o, -sh, -ch, and –ss form plurals by taking –es. Look at these pairs of words: Bus – Buses Brush – Brushes Continue ..... Click here ...

Class 3 English Practice Grammar Worksheet -The Adverb

Class 3 English Practice Grammar Worksheet -The Adverb Class 3 English – The Adverb – Kinds of Adverb Fill in the blanks with suitable Adverbs of place. Choose from the box. Up outside everywhere back down away here there ...

Bhakti Movement NCERT Class 12 History

Bhakti Movement NCERT Class 12 History The Bhakti movement was an effort to achieve salvation and emancipation by devotion to God. In Hindi, the word bhakti refers to fervent devotion to God. This movement, which stressed a single-minded, ardent devotion to God, is seen as the most characteristic act of religious progress during the Middle Ages. In the 12th and 13th centuries, Kabir Das was a key figure in the Bhakti Movement. As a result of the movement, Kabir Das' poems and religious writings attained widespread fame. Kabir Das was raised up by a Muslim family. However, his religious beliefs were influenced by his Hindu teacher Ramananda, who regarded Rama as the highest God. The first Sikh guru and the founder of Sikhism was Guru Nanak. He vehemently opposed prejudice based on customs, rivalry, and caste in religion. Nanak was raised in a Hindu household and from an early age began to exhibit spiritual tendencies. He helped the indigent and underprivileged. His followers began r...

Takshila Learning - Online Tutorials

Search This Blog