Problem 2. A) A Michelson interferometer uses light of wavelength 500 nm. The irradiance of the beam exiting the laser is IL. What are the possible differences in the lengths of the arms of the interferometer when the irradiance at the detector is IL/3? B) Young's Double slit experiment is performed with HeNe laser wavelength 632.8 nm. The screen is 2 m from the slits and the slit separation is 0.2 mm. Find the distance of the 3th bright fringe from the center of the interference pattern on the screen (call the central bright fringe the "Oth" fringe).

E17P2

1. a. If a piece of glass (n = 1.5) is coated with a transparent plastic (n = 2.0), will there be a phase shift in either of the beams reflecting off the interfaces (air/plastic and plastic/glass)? How can you tell, without doing the experiment, whether or not there will be a phase shift in either beam? Be specific about what rays are reflecting off what materials. b. So what thickness or thicknesses give the maximum reflection? What thickness or thicknesses (hint: it's thicknesses) give the minimum reflection? Assume that a light of wavelength 500. nm is used, and you may leave the answer in nm. Yes, this is a choice between equations 35.17 and 35.18, but your answer to part a should be helpful in deciding which set.

A pattern of light is shown on the screen. You measure the distance between the source of the light and the screen to be 2.35m. The speaker tells you that the wavelength he is using is 578nm, and that the spacing between the slits is 2.98 x10^-5m. The pattern looks like this a) What type of slit plate is being used? b) what angle does a live drawn from the centre of the slit plate to the third order bright fringe make with the perpendicular biscetor? Please give answers to 3 significant digits

1. The light intensity vs. position graph of a double-slit experiment is shown below. The graph was made with helium–neon laser light of wavelength 630 nm shined through two very narrow slits separated by a small distance. The slits were 2.0 meters away from the probe. What is the path-length difference (from the two slits to the screen) when the probe is at position 9.0 mm, in nm? 2. The light intensity vs. position graph of a double-slit experiment is shown below. The graph was made with helium–neon laser light of wavelength 640 nm shined through two very narrow slits separated by a small distance. The slits were 2.0 meters away from the probe. What is the path-length difference (from the two slits to the screen) when the probe is at position 10 mm, in nm? 3. The light intensity vs. position graph of a double-slit experiment is shown below. The graph was made with helium–neon laser light of wavelength 640 nm shined through two very narrow slits separated by a small distance. The…

The pupil of an eagle's eye has a diameter of 6.0 mm. Two field mice are separated by 0.010 m. From a distance of 197 m, the eagle sees them as one unresolved object and dives toward them at a speed of 20 m/s. Assume that the eagle's eye detects light that has a wavelength of 550 nm in vacuum. How much time passes until the eagle sees the mice as separate objects? t= i

Light from a He-Ne laser of wavelength is 633 nm passes through a circular aperture of diameter 114 mm. The width of the central maximum on the screen is 54.2 mm. How far is a screen from the circular aperture? A. 1.54 m B. 4.88 m C. 8.00 m D. 9.76 m E. 4.00 m

20. DETAILS OBINPHYS8 9.P.001. ASK YOUR TEACHE ........................ Suppose a beam of red light from an He-Ne laser (2 = 633 nm) strikes a screen containing two narrow slits separated by 0.210 mm. The fringe pattern is projected on a white screen located 1.10m away. Find the distance in millimeters between adjacent bright areas near the center of the interference pattern that is produced. mm Submit Answer

If you can read the bottom row of your doctor's eye chart, your eye has a resolving power of one arcminute, equal to 1.67×10−2 degrees. if this resolving power is diffraction-limited, to what effective diameter of your eye's optical system does this correspond? Use Rayleigh's criterion and assume that the wavelength of the light is 540 nmnm . Express your answer in millimeters to three significant figures. in nm

3. A Cu target emits an X-ray line of wavelength = 1.54 Å. a) Given that the Bragg angle for reflection from the (111) planes in Al is 19.2°, compute the interplanar distance for these planes. Recall that aluminum has an fcc structure. b) Knowing that the density and atomic weight of Al are, respectively, 2.7 g/cm3 and 27.0, compute the value of Avogadro's number.