10. A beam of initially unpolarized light of intensity 723 W/m^2 passes through a series of polarizing filters, each one s axis aligned at a 17.9-degree angle with respect to the previous filter s axis. The beam of light emerging from the final filter in the series has an intensity of 220.1 W/m^2. How many polarizing filters did the beam pass through?     3     12     9     6

UV rays with a wavelength (in a vacuum) of 359.0 nm are passed into a medium with a refractive index of n = 1.65. What is the frequency of the rays within this medium? (Units: Hz)

An isotropic point source emits light at wavelength 470 nm, at the rate of 210 W. A light detector is positioned 450 m from the source. What is the maximum rate dB/dt at which the magnetic component of the light changes with time at the detector's location? The speed of light is c = 3 x 108 m/s, and Ho = 47 x 107 H/m. Number 2.98754 UnitsTT/s the tolerance is +/-5%

8. Three polarizing disks whose planes are parallel and centered on common axis. The directions of their transmission axes relative to the vertical are respectively: 01 = 17°, 02 = 45°, and 03 = 55°. A beam of light polarized along the vertical is incident onto the first polarizer with an intensity of Io = 14 W/m2. Calculate the transmitted intensity through all three polarizers. W/m2 of19 00 of1 9 oor19

1. A radio telescope measures a plane wave with a flux density of 5 Jy along theX polarisation and 2.5 Jy along the Y polarisation. The waves are determinedto have a phase difference of 30◦. Calculate the Stokes parameters.

A room heater uses a concave mirror to reflect infrared radiation from hot coils. The mirror has a radius of curvature of 55.0 cm and produces an image of the coils 3.40 m away from the mirror. What is the intensity of IR radiation in W/m2 projected by the concave mirror on a person 3.40 m away? The heating element radiates 1,750 W and has an area of 130 cm2, and half of the radiated power is reflected and focused by the mirror.

Unpolarized light passes through two Polaroid sheets. The transmission axis of the analyzer makes an angle of 35.0° with the axis of the polarizer. (a) What fraction of the original unpolarized light is transmitted through the analyzer? (b) What fraction of the original light is absorbed by the analyzer?

6. In a polarizer-analyzer combination, 90.0% of the light intensity falling on the analyzer is absorbed. Determine the angle between the transmission axes of the polarizer and analyzer.

Yellow light with wavelength 600nm propagates in the +x direction. The wave is linearly polarized along the ±y direction. a) Draw a labeled snapshot mode picture of what the electric and magnetic fields look like. Use vector representation. b) Determine the frequency of oscillation of the electric field vector for the yellow light. Is the magnitude of this frequency very large or very small?

A.) Polarized light is incident on 6 polarizing sheets. The axis of the first polarized sheet makes an angle 0 with the plane of polarization. Each subsequent sheet has an axis that is rotated by an angle e from that of adjacent sheets. Find e if 34% of the incident intensity is transmitted by the sheets. B.) Suppose you want to rotate the plane of polarization of a beam of polarized light by 78°, but you do not want the final intensity to be less than 53% of the initial intensity. What is the minimum number of polarizing sheets you must use? Assume that each sheet is rotated the same angle relative to the adjacent sheets. sheets