Part 1: Light from two lasers is incident on an opaque barrier with a single slit...
Part 1: Light from two lasers is incident on an opaque barrier with a single slit of width 8.0 x 10-5 m. One laser emits light of wavelength 480 nm and the other is 720 nm. A screen to view the light intensity pattern is 2.0 m behind the barrier. What is the distance from the center of the pattern to the nearest completely dark spot (dark for both colors)?
a) 3.6 cm b) 4.0 cm c) 4.4 cm d) 4.8 cm e) 5.2 cm
ANSWER IS 3.6cm PLEASE EXPLAIN
Part 2: The 2-slit experiment from the question above is now repeated with the 480 nm laser (the 720 nm laser is switched off). Approximately how many smaller bright spots are observable within the central bright region?
ANSWER IS 6, PLEASE EXPLAIN
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