Bright and Dark Fringes Are Seen on a Screen When

question 25

Multiple Choice

Bright and dark fringes are seen on a screen when light from a single source reaches two narrow slits a short distance apart. Each bright fringe will shift to the location of the adjacent bright fringe if a thin film is placed in front of one of the slits. The minimum thickness of this film must be

• A) .
• B) .
• C) .
• D) .
• E) .

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