Explanation:
When light ray strikes a surface perpendicularly, all its parts enter the medium at the same time. So, all the parts of light will have a change in speed at the same time. So, there will be no bending but only change in speed of light ray.
Answer:
The incident of light goes in middle media
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Explanation:
When light ray strikes a surface perpendicularly, all its parts enter the medium at the same time. So, all the parts of light will have a change in speed at the same time. So, there will be no bending but only change in speed of light ray.
Answer:
The incident of light goes in middle media