In a single-slit diffraction experiment, there is a minimum of intensity for orange light at 600 nm and a minimum of intensity for violet light at 400 nm at the same angle of 2 x 103 rad. 5. What is the minimum possible slit width? 6. A spy satellite orbiting at 160 km above the Earth's surface has a lens that can resolve objects on the ground as small as 20 cm. What is the effective diameter of the lens as determined by diffraction consideration alone? Assume 2 = 550 nm.

33. You have a laser (a monochromatic light source) and want to estimate the wavelength. You decide to use a reflective diffraction grating to do this. The light is incident on the grating at 20 degrees with respect to normal. Using a grating with a groove distance of 5 um, the first-order diffraction, is found at an angle of -12.5 degrees. Determine the wavelength of the source. a) 500 nm b) 628 nm c) 808 nm d) 946 nm e) None of the above 34. In Raman spectrometry, Stokes lines have a) lower energy than that of anti-Stokes scattering. b) equal energy to that of anti-Stokes scattering. ) higher energy than that of anti-Stokes scattering d) none of the above 35. Upon ionization of phenol in aqueous solution, maximal UV absorbance changes to longer wavelength. a) True b) False 36. It takes longer time to observe fluorescence than phosphorescence. a) True b) False 37. The vibrational motion of C-H stretching in ethylene as in the figure can be detected by a) IR. b) Raman. c) IR and Raman.…

10. You have a single-slit diffraction apparatus, with a slit 4.60 × 10−6 m wide arranged 1.80 m from the screen. You would like an anti-node to appear 68.2 cm from the right bisector. What are two possible visible wavelengths you could use?

Light from an argon laser strikes a diffraction grating that has 4,300 grooves per centimeter. The central and first-order principal maxima are separated by 0.444 m on a wall 1.67 m from the grating. Determine the wavelength of the laser light. 597.5 nm 510.7 nm 440.3 nm 363.9 nm

Q1:a) Parallel rays of green mercury light with a wavelength of 546 nm pass through a slit covering a lens with a focal length of 60.0 cm. In the focal plane of the lens the distance from the central maximum to the first minimum is 10.2mm. What is the width of the slit? b) Unpolarized light of intensity 20 W /cm² is incident on two polarizing filters. The axis of the first filter is at an angle of 25.0° counterclockwise from the vertical and the axis of the second filter is at 62.0°counterclockwise from the vertical. What is the intensity of the light after it has passed through the second polarizer?

Irina finds an unlabeled box of fine needles and wants to determine how thick they are. A standard ruler will not do the job, as each needle is less than a millimeter thick. So, to determine the thickness, she uses a needle to poke a hole in a piece of paper. Then, she positions a 670 nm laser pointer to shine through the hole and project a circular diffraction pattern on a wall 21.2 m away. She then uses her ruler to measure that the central bright circle is 19.7 cm in diameter. What diameter does Irina calculate for the needle?

A diffraction grating with unknown number of lines per mm is illuminated by light at a wavelength = 633 nm and the first order diffraction pattern is seen at an angle B = 50.0°. Light of a second wavelength is shone onto the grating, whose second order diffraction pattern is seen at y = 60.0°. What is the wavelength of this second beam? 358 nm 392 nm 716 nm 548 nm 272 nm

A thin film of glass (n = 1.66) of thickness 0.365 um is viewed under white light at near normal incidence. What wavelength of visible light is most strongly reflected by the film when surrounded by air? (Visible light ranges from 400 to 700 nm.) nm Additional Materials

18. Suppose that you are shining light through a small slit (width = 400 nm). Which will diffract more: a red laser with a wavelength of 650 nm or a green laser with a wavelength of 450 nm?     not enough information to determine     the diffraction will be the same     green laser     red laser

Jill is helping her younger brother Nathan set up an exhibit for a Science Fair. Nathan’s exhibit pertains to the wave-particle nature of light waves. He wishes to demonstrate the wave nature of light by displaying the two point interference pattern of red laser light (λ = 648 nm). Nathan has purchased a double slit slide from a science warehouse which has slits separated a distance of 0.125 mm. Nathan has asked Jill to determine the slide-to-screen distance which will result in a 2.0 cm separation between adjacent bright spots. What distance will result in this antinodal spacing?