A very thin sheet of plastic (n=1.57) covers one slit of a double-slit apparatus illuminated by 670 nm light. The center point on the screen, instead of being a maximum, is dark.
Part A
What is the (minimum) thickness of the plastic? Express your answer to two significant figures and include the appropriate units.
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A very thin sheet of plastic (n=1.57) covers one slit of a double-slit apparatus illuminated by 670 nm light.
A very thin sheet of plastic (n=1.60) covers one slit of a double-slit apparatus illuminated by 640nm light. The center point on the screen, instead of being a maximum, is dark. What is the minimum thickness of the plastic?t= _______ nm
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