Diffraction

A diffraction grating with 500\text{lines}/\mathrm{mm} is illuminated by two wavelengths of light: 450\mathrm{nm} and 600\mathrm{nm}. What is the distance between the m=2 bright fringes of the two colors of light on a screen 1.3\mathrm{m} away?

A diffraction grating has 500\text{lines}/\mathrm{mm}. If it is illuminated by a laser at 532\mathrm{nm}, how many bright spots will be observed on a screen placed behind the grating?

A particular kind of oil with an index of refraction of 1.46 has spilled on water. The different thicknesses of the oil slick result in different colors being strongly reflected at different parts of the spill. But near the edges, you identify the thinnest part of the oil layer that strongly reflects green light with a wavelength of 550 nm when you are directly overhead. What is the thickness of the oil at this point? Assume light is incident normal to the oil surface.

You place one glass slide on top of another, with an animal hair between them at one end. You illuminate the slides with blue light of wavelength 450\mathrm{nm}. You count along the slide and find 300 transitions from bright to dark and back to light. How thick is the hair?

A carbon dioxide laser produces $10.6\mathrm{\mu }\mathrm{m}$ electromagnetic waves, which pass through a circular aperture with diameter $1.0\mathrm{mm}$. What is the approximate width of the laser beam when it strikes a target $3.0\mathrm{m}$ away?

A $480\mathrm{nm}$ light is used to illuminate a diffraction grating with $500\mathrm{lines}/\mathrm{mm}$. What is the angle, measured from the central maximum, to the m=3 bright fringe?

A diffraction grating has $500\mathrm{lines}/\mathrm{mm}$. If it is illuminated by a laser at $532\mathrm{nm}$, how many bright spots will be observed on a screen placed behind the grating?

A 532 nm laser 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?

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

A single slit is illuminated by coherent monochromatic light at 680\mathrm{nm}. On a screen 2.9\mathrm{m} behind the slit, a central bright spot is observed to have a width of 39\mathrm{mm}. What is the width of the single slit?

A carbon dioxide laser produces  electromagnetic waves, which pass through a circular aperture with diameter 1.0\mathrm{ mm}. What is the approximate width of the laser beam when it strikes a target 3.0\mathrm{ m} away?

A single slit is illuminated by coherent monochromatic light at $680\mathrm{nm}$. On a screen $\mathrm{2..9}\mathrm{m}$ behind the slit, a central bright spot is observed to have a width of $39\mathrm{mm}$. What is the width of the single slit?

A single slit experiment is conducted in air using a laser at $532\mathrm{nm}$ and a slit width of $20\mathrm{\mu }\mathrm{m}$. What happens to the fringe spacing if the entire experiment is conducted in water?

A single slit experiment is conducted in air using a laser at $532\mathrm{nm}$ and a slit width of $20\mathrm{\mu }\mathrm{m}$. What happens to the fringe spacing if the slit width is decreased while the distance to the screen and wavelength remain constant?