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2. If 725-nm and 650-nm light passes through two slits 0.63 mm apart, how far apart...

2. If 725-nm and 650-nm light passes through two slits 0.63 mm apart, how far apart are the second-order fringes for these two wavelengths on a screen 1.3 m away? Express your answer to two significant figures and include the appropriate units

7. A single slit 1.1 mm wide is illuminated by 420nm light.

What is the width of the central maximum (in cm ) in the diffraction pattern on a screen 3.0 mm away?

Express your answer using two significant figures.

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