OPTICS PROBLEMS

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1. The reflectance R (perpendicular) for the separation surface between a refractive index medium n and the vacuum is 0.15 when the angle of incidence coincides with the polarization angle (also called the Brewster angle). Determine the value of n.

2.At the separation surface of a refractive index medium n with vacuum, the reflectance R is 0.04 when the incidence is normal thereto. Determine the value of the R (perpendicular) reflectance at the angle at which the R (parallel) reflectance is negated.

3. A linearly polarized laser beam perpendicular to the plane of incidence and of 0.1 W / cm2 of intensity is incident on the central point of the flat face of a glass hemisphere (n = 1,52). Determine the I intensity emerging by the spherical surface of the hemisphere when the laser beam is incident under the polarization angle (or Brewster angle).

4.The rotary power of a solution of sucrose in water (1 g of sucrose per cm3 of solution) is 66.45 ° per 10 cm of trajectory traversed at 20 ° C for the wavelength of a He-Ne laser (λ = 632.8 nm). If a linearly polarized laser in the vertical direction strikes the end of a 60 cm long tube, how much has the direction of polarization of the ray emanating from the other end of the tube rotated, knowing that it contains 500 cm3 of solution, Which 20 g are sucrose?

5. Una lámina birrefringente uniáxica, de espesor e = 100 µm y de birrefringencia Δn = 0,01, está colocada entre polarizadores cruzados. Las direcciones de polarización de dichos polarizadores forman un ángulo de 45º con el eje óptico de la lámina. Determinar la longitud de onda del espectro visible (380-780 nm) para la que la intensidad transmitida sea nula.

CAN SOMEONE HELP ME?