Question

when a Ray of light passes from air to glass, for what angle of incidence, the ray will not be deviated?​

Answer 1

When a ray of light passes from a denser material (eg water or glass) into a less dense material (eg air) it is bent towards the surface between the two materials. This means that in this situation the angle of refraction is always greater than the angle of incidence.
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Answer 2

Dear Student,

◆ Answer -

Refracted ray will not be deviated at angle of incidence 0° and 90°. i.e. when incident ray is passing through normal or is parallel to reflecting surface.

● Extra information -

The change in direction of light rays while going from one medium to another is called refraction.

# Laws of refraction -

- The incident ray, refracted ray & normal to reflecting surface all lie in same plane.

- For given pair of media, ratio of sine of incident angle to sine of refracted angle is constant.

- According to Snell's law -

μ = sin(i) / sin(r)

Thanks dear. Hope this helps you...