Physics
Grade-10
Easy
Question
Which of the following shows the correct labeling of the diagram shown below?
- Eye lens, ciliary muscles, retina, optic nerves
- Ciliary muscles, pupil, blind spot, retina
- Pupil, iris, retina, optic nerves
- Iris, pupil optic nerves, retina
Hint:
It is biconvex.
It helps in contraction of iris.
It is the screen on which the image forms.
They send signal to the brain.
The correct answer is: Eye lens, ciliary muscles, retina, optic nerves
The correct option is a)Eye lens, ciliary muscles, retina, optic nerves.
- The main function of the lens is to transmit and focus light onto the retina to create sharp images of objects observed at different distances. The crystalline lens is also the main structure of accommodation reflexes.
- The ciliary muscle is attached to the lens of the eye by zonal fibers. It can change the shape of the lens by contracting it, so you can focus on nearby objects. Contraction of the ciliary muscles makes the lens more spherical, increasing its focusing power.
- The retina contains millions of light-sensitive cells (rods and cones) and other nerve cells that receive and organize visual information. The retina sends this information to the brain via the optic nerve so that we can see.
- The optic nerve is a bundle of over one million nerve fibers that carry visual messages. There is one that connects the back of each eye (retina) to the brain.
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Match the following:
Match the following:
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