Answers

2016-03-31T14:23:04+05:30
If one of them is in reversed position then no dispersion occur and its in right position then the dispersion is same but somewhat above than the first one(here first one means dispersion using only one prism)
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2016-03-31T22:06:58+05:30
If one prism is kept in inverted position there will be no diversion it will combine into a single beam of light
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