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A laser with red light has a frequency of 462 Hz(tera herz=1012 Hz) passes through a...

A laser with red light has a frequency of 462 Hz(tera herz=1012 Hz) passes through a double slit. A pattern of interference is observed on a screen that is located 5m from the double slit. The distance to the second order is 80 cm. Determine:

a) Wave length of the laser

b) Separation of the slits

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