Question

A light source containing two wavelengths, red and green, is incident on two slits separated by a distance "d". The resulting pattern is observed on a screen a distance "L"away. 1. Draw a diagram indicating the source, the slits, the screen and the resulting zeroth, first and second order pattern observed on the screen. Clearly label the color(s) of the spots. (10 Points) Op 2. In the two 2. In the two-slit experiment described above, a third-order bright fringe for red light is observed at an angle of 7.10° away from the centerline. If the wavelength of light is 600 nm, how far apart are the two slits? Show all Steps [4 Points) 3. Given that the screen is 1.2m away from the slits, how far from the central bright spot is the first order bright spot for the green light (520nm)? Show all steps [4 Points] (2 points) 4. What principle is responsible for light spreading as it passes through a narrow slit? A) refraction B) polarization C) diffraction D) dispersion

Answer 1

For the higher  wavelength the separation is higher from the center to the pattern.

4) For the light passing through a single narrow slit, the light get bending from the edges of the slits called diffraction phenomena

denomi, ma3,3% order dsm (9:10). 3 (Gooxio 9) d=1.456x105m o dsmo= 1X dey-> 52oxicol. 2 y = a = 114568165 y =60043 m