18. State a condition for no refraction of light when light enter from one medium to another
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Answer:
Heya mate!!
Explanation:
When ray of light is on the normal ray.
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Answer:
There will be no refraction of light if the light travels in medium with exact same refractive index, for example there are two mediums A & B, light ray enters medium A & then medium B, there will be no change in the path of light ray if the refractive index of medium A is equal to refractive index of medium B.
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