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Q. Two narrow slits 50 micrometers apart are illuminated with light of wavelength 500 nm . What is the angle of the m=2 bright fringe in radians? in degrees?

Q. The uniform electric field between two oppositely charged parallel plates does work on a series of small positively charged spheres in moving them from one plate to the other. The graph below represents the relationship between the work done on the spheres and their respective charges. What does the slope of the graph represent?

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