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प्रश्न
उत्तर
human eye :
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संबंधित प्रश्न
How does the eye regulate the amount of light that falls on the retina?
The optical prescription for a pair of spectacles is :
Right eye : −3.50 D
Left eye : −4.00 D
Are these lenses thinner at the middle or at the edges?
Fill in the following blank with suitable word:
The part of eye sensitive to light is...................
List, in order, the parts of the eye through which light passes to reach the retina.
Given below is certain structure. Write against them its functional acivity.
retina and ……………………….
Write whether the following is true or false:
Rods are the receptor cells in the retina of the eye sensitive to dimlight.
Mention, if the following statement is True or False
The least distance of distinct vision for the human eye is 25 cm
Choose the Odd One Out:
For the normal human eye, the near point is at ___________ cm.
When light rays enter the eye, most of the refraction occurs at the ____________.
A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in Figure . In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?
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 |
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| (i) | (ii) | (iii) | (iv) |
Given below is a diagram depicting a defect of the human eye. Answer the questions that follow:
- Give the scientific term for the defect.
- Mention one possible reason for the defect.
- What type of lens can be used to correct the defect?
Name the part of the eye which gives colour to the eyes.
Match the following
| 1. | Conjunctiva | a. | Coloured part of eye |
| 2. | Cornea | b. | Photosensitive layer |
| 3. | Iris | c. | Refraction |
| 4. | Retina | d. | Protection |
Which of the following is responsible for the adjustment of the size of pupil?
Write the main functional activity of the following structure.
Choroid
Write the main functional activity of the following structure.
Ciliary body and suspensory ligament
Name the following:
Two pigments of the sensory cells.
Differentiate between members of the following pair with reference to what is asked in the bracket.
Aqueous humour and vitreous humour (location).
Give reason:
Blind spot is considered as 'area of no vision'.
