Two flat glass plates are in contact along one end and are separated by a sheet of paper 3.0 × 10−⁶ m thick at the other end.The top plate is illuminated by a monochromatic light source of wavelength 490 nm.How many dark parallel bands will be evident across the top plate? (1 nm = 10−⁹ m)Note that a dark band occurs where the plates contact. A) 13 B) 7 C) 9 D) 17

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The Answer of Two flat glass plates are in contact along one end and are separated by a sheet of paper 3.0 × 10−⁶ m thick at the other end.The top plate is illuminated by a monochromatic light source of wavelength 490 nm.How many dark parallel bands will be evident across the top plate? (1 nm = 10−⁹ m)Note that a dark band occurs where the plates contact. A) 13 B) 7 C) 9 D) 17

Two Flat Glass Plates Are in Contact Along One End