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प्रश्न
Fill in the following blank with suitable word:
Most of the refraction of light rays entering the eye occurs at the outer surface of the.............
उत्तर
Most of the refraction of light rays entering the eye occurs at the outer surface of the cornea.
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संबंधित प्रश्न
Name the part of the eye:
which controls the amount of light entering the eye.
Out of rods and cones m the retina of your eye:
which detect colour?
Explain why, we cannot see our seats first when we enter a darkened cinema hall from bright light but gradually they become visible.
Explain clearly why, a person who has lost the sight of one eye is at a disadvantage compared with the normal person who has two good eyes.
Mention if the following statement is true (T) or false (F) Give reason.
Sometimes medicines dropped into the eyes come into the nose and even throat
The diagram alongside represents a certain defect of vision of the human eye.
(i) Name the defect.
(ii) Describe briefly the condition in the eye responsible for the defect.
(iii) Redraw the figure by adding a suitable lens correcting the defect. Label the parts through which light-rays pass.
(iv) What special advantage do human beings derive in having both eyes facing forward?
What are the functions of tears?
Write the name.
The part of human eye that transmits electrical signals to the brain.
With reference to human eye, answer the following question.
What is aqueous humor?
The figure given below refers to the vertical section of the eye of a mammal. Study the figure carefully and answer the following questions.
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- Label the guidelines shown as 1 to 10.
- Write one important role of parts shown as 3 and 7.
- Write one structural difference between the parts shown as 9 and 10.
- Mention one functional difference between the parts shown as 6 and 8.
