In the double-slit experiment, the viewing screen is at distance D = 4.00 m, point P lies at distance y = 20.5 cm from the center of the pattern, the slit separation d is 4.50 mu m, and the wavelength lambda is 650 nm. (a) Determine where point P is in the interference pattern by giving the maximum or minimum on which it lies, or the maximum and minimum between which it lies. (b) What is the ratio of the intensity I_(P) at point P to the intensity I_("cen") at the center of the pattern?

In the double-slit experiment, the viewing screen is at distance D

1.	In the double-slit experiment, the viewing screen is at distance D = 4.00 m, point P lies at distance y = 20.5 cm from the center of the pattern, the slit separation d is 4.50 mu m, and the wavelength lambda is 650 nm. (a) Determine where point P is in the interference pattern by giving the maximum or minimum on which it lies, or the maximum and minimum between which it lies. (b) What is the ratio of the intensity I_(P) at point P to the intensity I_("cen") at the center of the pattern?
Answer» SOLUTION :(a) between the CENTRAL maximum (zero WAVELENGTH difference) and the FIRST minimum (`1 // 2` wavelength difference), (b) 0.196

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