Calculate the number of bright fringes per centimeter. at, Ask an Expert

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Q.Two narrow slits separated by 1 mm are illuminated by light of wavelength 640 nm, and the interference pattern is viewed on a screen 1.7 m away. Calculate the number of bright fringes per centimeter on the screen.

Q. A charge of -2.3 × 10-9 C is at the origin and a charge of 8.1 × 10-9 C is on the x-axis at x = 3 m. At what two locations on the x-axis (xpositive, xnegative) is the potential zero?

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