The Human Eye Forms The Image Of An Object At It’s

The human eye forms the image of an object at its:

A. Cornea

B. Iris

C. Pupil

D. Retina

The cornea is the thin outer layer of the eye, which helps refract light into the eye. The pupil is the opening in the center of the eye, which controls the amount of light that should enter. The iris controls the size of the pupil. Retina is a light sensitive membrane.

The image of an object is always formed at the

Light from objects in front of us enters the eye through a thin layer called the cornea. This layer (cornea) has a higher refractive index than air and therefore helps refract light into the eye. In the center of the eye is an opening called the pupil. Light enters the eye through the pupil. This means that the pupil maintains the amount of light entering our eyes.

The least distance of distinct vision for a young adult with normal vision is about

Where the light is too bright, the pupil constricts, and when there is too little light, the pupil dilates, allowing more light to enter.

The size of the pupil is controlled by the iris of the eye. After passing through the pupil, the light passes through a convex lens, which converges the light beam to a point on the photosensitive membrane called the retina.

What is the function of the lens in the human eye

IRIS – It is dark and behind the cornea. It controls the size of pupil according to the light entering with intensity. It determines eye colour.  

PUPIL – It checks the amount of light entering the eye and changes its size with the help of iris accordingly.  

The image of an object is formed

RETINA – The function of retina is to receive the light focused by the eye lens or crystalline lens and convert it to electrical signals that will be interpreted by the brain through optic nerve.

Layers of light-sensitive nerve tissue at the back of the eye receive the images and transmit them as electrical signals to the brain via the optic nerve.

The lens of the crystalline eye acts as a light-sensitive screen, producing an inverted true image of the object on the retina.

The light that enters our eyes is converted by the retina into electrical impulses that our optic nerves send to our brain, creating the images we see.

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