d. The source in Young’s experiment emits at two wavelengths. On the viewing screen, the fourth maximum for one waveleng

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d.
The source in Young’s experiment emits at two wavelengths. On the
viewing screen, the fourth maximum for one wavelength is located at the
same spot as the fifth maximum for the other wavelength. What is the ratio
of the two wavelengths? [3]
If 500-nm and 650-nm light illuminates two slits that are separated
by 0.50 mm, how far apart are the second-order maxima for these
[3]
two wavelengths on a screen 2.0 m away?