What is the reason behind deviating of light rays towards the normal when it passes from a rarer medium to a denser medium.
Asked by Sushant Kumar | 26th Dec, 2013, 08:56: PM
This is due to the least time principle, which says that "Of all the possible paths that light might take to get from one point to another, it always takes the path that requires the least amount of time."
Answered by | 26th Dec, 2013, 09:57: PM
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