5. Light of wavelength 520nm falls on a slit that is 3.20 x 10¬3 mm wide. Estimate how far the first brightish diffraction fringe is from the strong central maximum if the screen is 10.0 m away.

3. A single slit in an opaque screen is illuminated with a He-Ne laser (A = 1.1522 µm), and on a distant screen it is found that the middle of the tenth dark fringe in the interference pattern lies at an angle 0 = 6.4° from the central maximum. What band of the EM spectrum does this wavelength of light belong to? (a) (b) What is the width of the slit? (b) (c) tween the slit and the distant screen is immersed in water (n = 1.33) rather than At what angle (in degrees) will this minimum appear if the region be- air? (c)

38. Measurements are made of the intensity distribution within the central bright fringe in a Young's interference pattern (see Fig. 36.5). At a particular value of y, it is found that I/ - 0.810 when 600-nm light is used. What wavelength of light should be used to reduce the relative intensity at the same location to 64.0% of the maximum intensity?

16. If the first-order maxima of a diffraction grating occurs at 6.2° for light with a wavelength of 475 nm, a) What is the slit spacing? b) How many slits are in the grating if the grating is 1.33 cm long?

#21. In a single-slit experiment, light passes through the slit and forms a diffraction pattern on a screen 2.54 [m] away. If the wavelength of light is 655 [nm], and the width of the slit is 4.41 x 10-5 [m], find the linear distance on the screen from the center of the diffraction pattern to the first dark fringe. Upload Choose a File

8. Light of wavelength 6.0 × 10² nm falls on a double slit, and the first bright fringe of the interference pattern is observed to make an angle of 12° with the horizontal. Find the separation between the slits.

10. Please refer to the  Figure  which shows the pattern of interference fringes for light of wavelength 609 nm passing through two narrow slits, projected onto a screen a distance of 2.27 m away. The distance on the screen between the centers of two adjacent bright fringes is 1.42 cm. What is the distance between the two slits?     7.79E-05 m   9.74E-05 m   1.75E-04 m   1.27E-04 m