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Question
Arrange the following in the order in which a light ray travels to enable vision in the human eye.
1. Pupil 2. Cornea 3. Vitreous humor 4. Retina 5. Eye lens
1. Pupil 2. Cornea 3. Vitreous humor 4. Retina 5. Eye lens
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Solution
When the light ray enters the eye, it travels through the following parts respectively:
1. Cornea is the outermost layer of the eye through which the light enters the eye.
2. Pupil is the hole through which the light enters inside the eye.
3. After passing through the pupil, the light passes through the eye lens in order to get focussed on the retina.
4. The focussed light travels inside the eyeball through the liquid known as the vitreous humour before reaching the retina.
5. The final real and inverted image is obtained on the retina, which is the screen of the eye.
So, the correct order is 2, 1, 5, 3, 4
When the light ray enters the eye, it travels through the following parts respectively:
1. Cornea is the outermost layer of the eye through which the light enters the eye.2. Pupil is the hole through which the light enters inside the eye.
3. After passing through the pupil, the light passes through the eye lens in order to get focussed on the retina.
4. The focussed light travels inside the eyeball through the liquid known as the vitreous humour before reaching the retina.
5. The final real and inverted image is obtained on the retina, which is the screen of the eye.
So, the correct order is 2, 1, 5, 3, 4
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