Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
KFUPM-Physics Department December 31, 2003 1- Phys211 Major 2 Id # : Name # : . . The light from a 110-W lamp spreads uniformly in all directions. Find the irradiance of these optical electromagnetic waves and the amplitude of the E field at a distance 5 m from the lamp. Assume that 5% of the lamp energy is converted to light. 2- Sketch to scale a phasor diagram of the following sinusoidal waves and find the result of their superposition E1 = 2 sin( t+/2), E2 = 2 2 cos( t+/4), and E1 = 4 sin( t-/2). 3- Two harmonic light waves with amplitudes of 1.6 and 2.8 interfere at some point on a screen. What fringe contrast results there if their electric field vectors are parallel and if they are perpendicular? 4- A thin film of MgF2 (n = 1.38) is deposited on glass so that it is antireflecting at a wavelength of 500 nm under normal incidence. What wavelength is minimally reflected when the light is incident instead at 45º? 5- A thin sheet of fluorite of index 1.434 is inserted normally into one beam of a Michelson interferometer. Using light of wavelength of 589 nm, the fringe pattern is found to shift by 70 fringes. What is the thickness of the sheet? 6- The separation of a certain doublet is 0.0055 nm at a wavelength of 490 nm. A variable spaced Fabry-Perot interferometer is used to examine the doublet. At what spacing does the mth order of one component coincide with the (m+1)th order of the other? 7- A pinhole of diameter 0.5 mm is used infont of a sodium lamp (589 nm) as a source in a Young interference experiment. The distance form pinhole to slits is 1 m. What is the maximum slit space insuring interference fringes that are just visible. 8- Sketch an experimental setup for making an off-axis hologram like that discussed in your textbook. If the incident angle of the reference beam on the film is 20º, sketch another setup for observing the hologram on the developed film. Indicate on your figure the zero-order beam, your eye location, and the angles of the real and imaginary images. 9- Write the normalized Jones vector for the following wave and describe its state of polarization: E=i E0 cos(kz-t) + j E0 cos(kz-t- /4)) 10- Determine the state of polarization of a linearly polarized light initially polarized along 45º after it passes though HWP with SA horizontal and then QWP with SA vertical. Bonus Problem 11- Newton’s Rings are formed between a spherical lens surface and an optical flat. If the tenth bright ring of the green light (546.1 nm) is 7.89 nm in diameter, what is the radius of curvature of the lens surface? KFUPM-Physics Department December 31, 2003 Phys211 Major 2 Id # : Name # : Formulae cos 2 cos sin 2 cos sin sin l s 1.22 2n f t cos S 0c 2 E B E cB Er S 0 8..85 10 12 C 2 s 2 /( kg.m 3 ) c 3 108 m / s 1 T 1 F sin 2 ( ) 2 e ix 0 0 e iy c lt f V 1 0 ls R 2 m F 4r 2 F (1 r 2 ) 2 1 0 f . .