Question

5. Define the terms: (a) Blind spot on the retina (b) Persistence of vision of human eye​

Answer 1

1. 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.
2. Your eye and brain retain a visual impression for about 1/30 of a second. This ability to retain an image is known as persistence of vision. The eye retains the image of each frame long enough to give us the illusion of smooth motion.

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Answer 2

Explanation:

Here are your both the definitions.

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