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How is a rainbow formed through a prism?

The dispersion of colors in a prism occurs because of something called the refractive index of the glass. Every material has a different refractive index. As the white light moves through the two faces of the prism, the different colors bend different amounts and in doing so spread out into a rainbow.

What is meant by real and virtual image?

A real image is the collection of focus points actually made by converging rays, while a virtual image is the collection of focus points made by extensions of diverging rays. A real image occurs where rays converge, whereas a virtual image occurs where rays only appear to diverge.

What type of image is formed in our eyes?

Human eye lens are convex in nature and form real and inverted images and when the object is kept before the focus point and the centre of the lens it form virtual and erect images.

Which carries the image to the brain?

optic nerve

How image is formed on retina?

An image is formed on the retina with light rays converging most at the cornea and upon entering and exiting the lens. Rays from the top and bottom of the object are traced and produce an inverted real image on the retina. The distance to the object is drawn smaller than scale.

What type of image is formed on the retina of human eye?

Answer: Image formed in the retina of human eye is real and inverted. Explanation: This image is then sent to brain via the optic nerve through the optic tract, optic charisma, lateral geniculate ganglion to the brain where it is processed and turned into an erect image.

Does the retinal image size change as pupil size changes?

Changes in pupil size have relatively little effect on the perception of the spherical aberrations in the eye’s optics. Changes in pupil size also produce little differences in the depth of field (depth of field is the dioptric range for which the retinal image quality does not change appreciably).

What is retinal image size?

Figure 6.3: The retinal image size of a familiar object is a strong monocular depth cue. The closer object projects onto a larger number of photoreceptors, which cover a larger portion of the retina. This cue is called retinal image size, and was studied in [97]. Two important factors exist.

What size is the retina?

1,094 square mm

What happens to light after it strikes the retina?

After entering the pupil, the light passes through the lens. The lens bends the light to form an upside-down image on the retina. What happens to light after it strikes the retina? Rods and cones detect the color and then change images into signals to that travel to the brain along the optic nerve.