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Can you ever have a situation in which a light ray goes undeviated through a prism ?
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6 years ago

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```										in case of right angled isoceles prism if  a light is incident at the face AB ( prism is right angled at c) then it comes out parallel to the incident ray.....
```
6 years ago
```										Dear Nikhil
there are two cases

refractive index for the prism and external medium is same
deviation= 2 x incidence angle - prism angle,  for deviation to be zero incidence angle = prism angle/2

All the bestAKASH GOYALAskiitiansExpert-IITDPlease  feel free to post as many doubts on our discussion forum as you can. We  are all IITians and here to help you in your IIT JEE preparation. Now  you can win exciting gifts by answering the questions on Discussion  Forum. So help discuss any query on askiitians forum and become an Elite  Expert League askiitian.
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6 years ago

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