34. Wave Optics

A 532 nmlaser illuminates a pair of slits separated by $70\mu \mathrm{ m}$. What is the angular separation, in degrees, between the $m=1$ and $m=2$ bright fringes?

In a two-slit experiment, laser light of wavelength $600\mathrm{nm}$passes through a pair of slits separated by$42\mu \mathrm{m}.$ If the observing screen is$1.4\mathrm{m}$from the slits, what is the separation, in mm, between the bright fringes?

A $532\mathrm{nm}$ laser illuminates a pair of slits separated by $70\mathrm{\mu }\mathrm{m}$. What is the angular separation, in degrees, between the m = 1 and m = 2 bright fringes?

A double-slit experiment is set up using a helium-neon laser (λ=633 nm). Then a very thin piece of glass (n=1.50) is placed over one of the slits. Afterward, the central point on the screen is occupied by what had been the m=10 dark fringe. How thick is the glass?

Coherent light with wavelength 450 nm falls on a pair ofslits. On a screen 1.80 m away, the distance between dark fringesis 3.90 mm. What is the slit separation?

Two slits spaced 0.450 mm apart are placed 75.0 cm from a screen. What is the distance between the second and third dark lines of the interference pattern on the screen when the slits are illuminated with coherent light with a wavelength of 500 nm?

Coherent light of frequency 6.32 * 1014 Hz passes through two thin slits and falls on a screen 85.0 cm away. You observe that the third bright fringe occurs at ±3.11 cm on either side of the central bright fringe. (a) How far apart are the two slits? (b) At what distance from the central bright fringe will the third dark fringe occur?