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General
Easy
Question
Now imagine that the entire set-up is immersed in water (n = 1.33). Which of the following best describes what happens to the pattern of fringes?
- The fringe pattern disappears.
- The fringe pattern narrows, with the thin end remaining dark, but with more fringes seen.
- Dark and light fringes are interchanged, but the fringes have the same width.
- Dark and light fringes are interchanged, and the fringe pattern narrows
The correct answer is: The fringe pattern narrows, with the thin end remaining dark, but with more fringes seen.
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