Light from a helium-neon laser (λ� = 633 nm) is used to illuminate two narrow slits. The interference pattern is observed on a screen 3.4 mm behind the slits. Twelve bright fringes are seen, spanning a distance of 54 mm. What is the spacing (in mm) between the slits?

Red light (λ=710 nm) illuminates double slits separated by a distance d=0.118 mm. The screen and the slits are 2.41 m apart. Find the distance on the screen between the central maximum (m=0) and the third-order maximum (m=3). Give your answer in cm.

Coherent light with wavelength 600 nm passes through two very narrow slits and the interference pattern is displayed on a screen 0.80 m from the slits. 13 bright fringes are observed with a spacing of 4.00 cm between the center of the outside fringes. What is the spacing between the two slits? (Give your answer in micrometers.) Ive submitted this question multiple times and it has been incorrect on every occasion. The answer is absolutely not 1.56mm.

Light of wavelength 740.0 nm passes through a single slit of width 1.95 µm, and a diffraction pattern is observed on a screen 25.5 cm away. Determine the relative intensity of light I/Imax at 14.0 cm away from the central maximum.

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm (red) and 486 nm (blue). Light from a hydrogen lamp illuminates a diffraction grating with 460 lines/mm, and the light is observed on a screen 1.50 m behind the grating. What is the distance between the first-order red and blue fringes?

Using a 685 nm wavelength laser, you form the diffraction pattern of a 1.01 mm wide slit on a screen. You measure on the screen that the 15th dark fringe is 9.23 cm away from the center of the central maximum. How far is the screen located from the slit?

A double slit experiment using 532 nm light produces an interference pattern with the 1st order maxima separated by an angle of 0.115° from the central maxima. At what distance away should a viewing screen be placed such that the 1st and 2nd order maxima are separated by 6.00 mm?