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When a ray of light passes from one medium to another at a right angle (perpendicular incidence), it does not change direction or bend. This is because the refraction angle formula involves the sine of the angle of incidence, so when the angle of incidence is 0 degrees in perpendicular incidence, the sine of 0 is also 0. Therefore, the ray remains undeviated.

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1y ago

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The ray passing through of the lens is undeviated?

Theoretically is undeviated.


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When light passes through the optical center of a lens, it does not refract because the optical center is the point from which light rays are believed to pass undeviated. This means that the angles of incidence and refraction are both zero, resulting in no bending of the light ray.


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When a ray of light travels from a low index of refraction to a high index of refraction, it bends towards the normal line. This bending of light is known as refraction. The change in speed of light causes the light ray to change direction at the boundary between the two materials.


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