Skip to main content

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


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

Labels:

Comments

Post a Comment

Thank you we will contact ASAP.

Popular posts from this blog

Why is Hindi Day celebrated on 14 September?

Why is Hindi Day celebrated on 14 September? After independence, the Government of India set a goal to give an ideal form to the mother tongue of the country and set a target for grammar and orthography using the Devanagari script to bring standardization in writing. Subsequently, on September 14, 1949, the Constituent Assembly decided by a vote that Hindi would be the official language of India. To propagate the importance of this decision and to spread Hindi in every region, India is celebrating Hindi Day every year from 1953 to 14 September, at the request of Rashtrabhasha Prachar Samiti, Wardha. Apart from this, 14 September is also the birthday of Rajendra Singh, who worked tirelessly to make Hindi the official language of India. Hindi Day is observed every year on 14 September to mark the importance of the Hindi language in the country. The Hindi language is one of the oldest languages, which derives most of its academic vocabulary from the Sanskrit language written in the Deva
Post a Comment
Read more

Magnetic and non-magnetic material Class 6 Science

Magnetic and non-magnetic material  Class 6 Science A magnet is a substance that is drawn to certain magnetic materials like iron, cobalt, and nickel. Magnets have the ability to draw iron to them. Natural magnets are rocks that naturally draw iron. Non-magnetic materials include things like wood, rubber, coins, feathers, leather, etc. that are not drawn to iron. Magnet characteristics It pulls magnetic materials, such as iron. The magnet's two ends are referred to as its poles. The magnet's diametrically opposed poles are drawn together. Heating, hammering, or dropping causes it to lose its characteristics. On the basis of properties types of Magnets Temporary magnets are those magnets that are magnetic for only a little duration. Typically, iron, cobalt, or nickel are used to make them. When they are close to the powerful magnet, they act like a magnet. When they are yanked away from the powerful magnet, they stop being magnetic. Permanent magnets are magnets that have magne
Post a Comment
Read more