Problem a double-slit apparatus consists of two of slits, Ask an Expert

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Problem: A double-slit apparatus consists of two of slits separated by 0.25 mm with a screen 5.0 cm away. The slits are illuminated with red light from a cadmium lamp. Successive maxima in the interference pattern are found to be separated by 0.129 mm.

Part A- Calculate the wavelength of the light.

Please use great detail in explaining the solution. Thanks.

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