8. In the equation mλ = wsinom, the variable w represents a) the width of the central bright spot. b) the diameter of the beam. c) the distance between the adjacent slits. d) the width of the diffraction grating.
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- 3) A double-slit experiment has slit spacing 0.10 mm. What should be the slit-to-screen distance L if the bright fringes are to be 4.0 mm apart when the slits are illuminated with 633-nm laser light?8. How many (whole) bright fringes will be produced on an infinitely large screen if orange light (A = 590 nm) is incident on two slits that are 10.0 um apart?(The 3% margin of error does not apply for this question)12. A different diffraction grating apparatus has a line density of 18,000 lines per centimetre. You have an adjustable laser. What wavelengths would produce 5 bright lines on a screen, if non-visible EM radiation is possible?
- 2. If the light is replaced by another light with two wavelengths 700nm and 800nm. Is there any chance of overlapping of bright fringe by wavelength1 with bright fringe of wavelength of 2.11. Light of wavelength 520 nm is incident perpendicularly on a diffraction grating having 200 lines/mm. What is the highest order for which a sharp maximum occurs? (1) 9 (2) 11 (3) 7 (4) 8 2x1²x2 /1.5 WA (5) 5 2₁2) Light from glowing hydrogen contains many discrete spectral lines, of which two are Ha (hydrogen-alpha) and HB (hydrogen-beta), with wavelengths of 656.3 nm and 486.1 nm, respectively. Find the first-order angular separation between these wavelengths in a spectrometer that uses a grating with 6000 slits per cm.
- 6. A beam of light traveling in air has a wavelength of 475 nm. If the light illuminates a diffraction grating with 3000 lines/cm, what is the angle of the second-order bright spot produced? f19 0 oof193. In a double slit experiment, the distance between the slits is d=1 mm. A screen is situated at a distance of 2.5 m from the slits. Point P is at a distance of 25 cm from O', as in Figure. O' is the orthogonal projection of the center between the slits (0) on the screen. Monochromatic light with frequency v= 550 THz is used in this experiment. (a) Calculate the intensity of light at point P. (b) Calculate the angle ZP00'. (c) Calculate the location of the first three maxima with respect to point O'. (d) Calculate the location of the first three minima with respect to point O'. BONUS: You now consider that each slit has width a =0.05 mm. Calculate the intensity of light at point P. P.5. Calculate the wavelength of light that has its third minimum at an angle of 40.0o when falling on double slits separated by 5.00 μm.