Light of wavelength 505 nm passes through a single slit of width
4.32 x 10-5 m. At what angle does the
first interference minimum
(m = 1) occur?

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Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.