what is the working principle of human eyes??
Answers
Answer:
Eyes signal information which is used by the brain to elicit the perception of color, shape, depth, movement, and other features. The eye is part of the sensory nervous system.
Explanation:
According to the Question
Let the ratio be 5x : 4x
Total number of people in group = 72
We need to calculate the number of lawyers in the group & it is also given that the ratio of doctor to lawyers is 5:4
Sun of Ratios = Total number of people
Substitute the value we get
:\implies:⟹ 5x + 4x = 72
:\implies:⟹ 9x = 72
:\implies:⟹ x = 72/9
:\implies:⟹ x = 8
Now, putting the value of x = 8
4x = 4×8 = 32
Answer:
When light hits the retina (a light-sensitive layer of tissue at the back of the eye), special cells called photoreceptors turn the light into electrical signals. These electrical signals travel from the retina through the optic nerve to the brain. Then the brain turns the signals into the images you see.16-Jul-2019