In a double slit experiment the first minimum for 425 nm violet light is at an angle of 41°. Find the distance between the two slits in micrometers.

Suppose the separation of the narrow slits in Young's Experiment is 1.000 mm and the viewing screen is 5.000 m away. Plane waves of monochromatic 589.3-nm light illuminate the slits and the whole setup is in air where n = 1.00029. What would happen to the fringe separation if all the air was pumped out?

Laser light at 600 nm falls on a double-slit apparatus with slit separation 6 μm. Find the separation between the following fringes as seen on a screen 1 m from the slits. (a) The first and second bright fringes. (b) The third and fourth bright fringes.

In a Young's double-slit experiment, the angle that locates the second dark fringe on either side of the central bright fringe is 4.0 degrees. Find the ratio d/A of the slit separation d to the wavelength of the light. Number Units

Problem 17:  Suppose a 1.8 μm wide slit produces its first minimum for 410 nm violet light.Randomized Variablesλv = 410 nmλr = 750 nmw = 1.8 μm     Part (a) Calculate the angle at which this occurs for violet light in degrees.Numeric   : A numeric value is expected and not an expression.θv = __________________________________________Part (b) Where is the first minimum (in degrees) for 750 nm red light?Numeric   : A numeric value is expected and not an expression.θr = __________________________________________

In a Young’s double-slit experiment, two parallel slits with a slit separation of 0.100 mm are illuminated by light of wavelength 589 nm, and the interference pattern is observed on a screen located 4.00 m from the slits. (a) What is the difference in path lengths from each of the slits to the location ofthe center of a third-order bright fringe on the screen? (b) What is the difference in path lengths from the two slits to the location of the center of the third dark fringe away from the center of the pattern?

In the previous problem (Young's double slit experiment), given that D = 5 m, a = 0.25 cm and λ = 619 nm, calculate the fringe width w. Give your answer in millimetres. Answer: mm +