Tag: vision and the world of colours

Questions Related to vision and the world of colours

Power of accommodation of eye implies :

physics vision and the world of colours human eye and its working what is inside our eyes? human eye and defects of vision

  1. Control intensity

  2. Prevent internal reflection of light

  3. Change of focal length of eye lens

  4. all the above

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Correct Option: C
Explanation:

Power of accommodation of an eye is the ability of ciliary muscles to change the focal length of an eye (lens) to focus clearly the image on retina

Fill in the blank spaces by choosing the correct words from the list given below:
List : yellow spot, principal focus, less, shutter, more.

The small but very light sensitive area on the retina is called __________.

physics vision and the world of colours human eye and its working what is inside our eyes? human eye and defects of vision

  1. yellow spot

  2. principal focus

  3. shutter

  4. none of the above

Show answer
Correct Option: A
Explanation:

Yellow spot
Yellow spot is near the center of the retina and a highly pigmented area which is very sensitive to light.

State whether true or false:

Blind spot is found in the eyes of a blind person only.

physics vision and the world of colours human eye and its working what is inside our eyes? human eye and defects of vision

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Blind spot, small portion of the visual field of each eye that corresponds to the position of the optic disk (also known as the optic nerve head) within the retina. There are no photoreceptors in the optic disk, and, therefore, there is no image detection in this area. Every human has a blind spot.

Thus the above statement is false.