Sodium vapor light (average wavelength 607 nm) falls on a single slit of width 7.25 μm. At what angle θ, in degrees, does it produces its second minimum?

Two slits are separated by 0.370 mm. A beam of 555-nm light strikes the slits, producing an interference pattern. Determine the number of maxima observed in the angular range -32.0° < 0 < 32.0°. maxima Need Help? Read It

The hydrogen spectrum includes a red line at 656 nm and a blue-violet line at 434 nm. What are the angular separations between these two spectral lines for all visible orders obtained with a diffraction grating that has 5,000 grooves/cm? (In this problem assume that the light is incident normally on the gratings.)

Monochromatic, in phase light of wavelength > 752nm is incident on a piece of metal with either one or two slits on it - it is difficult to see to determine which. The diffraction pattern is observed on a viewing screen that is located 55cm away from the metal plate. The first two minima are measured to be 2.3cm and 7.0cm away from the central maxima. What is the brightness of the light at a distance of 6.3cm from the central maxima, relative to the brightness of the central maxima? x10-3 Note: Brightness is proportional to the SQUARE of the amplitude. For double slit, this means I = I (cos(d sin ) º)) ². 2 I = I₂ sin (5) xd sin 0 . For single slit, this means In both of these, I, is the maximum brightness, and d is the characteristic spacing of the slit(s).