light impinges on a slab of glass in air at the polarization angle Op Assume that T = 1, the net transmittance is known to be 0.86, and the incoming light is unpolarized. (a) Determine the percent of the incident power that is reflected. (b) If 1000 W comes in, how much power is transmitted with its E-field perpendicular to the plane-of-incidence?

If a polarizing filter reduces the intensity of polarized light to 50.0% of its original value, by how much are the electric and magnetic fields reduced?

Speculate as to s1at physical process might be responsible for light traveling more slowly in a medium than in a vacuum.

Qs: Light impinges on a slab of glass in air at the polarization angle 0,. Assume that T = 1, the net transmittance is known to be 0.86, and the incoming light is unpolarized. (a) Determine the percent of the incident power that is reflected. (b) If 1000 W comes in, how much power is transmitted with its E-field perpendicular to the plane-of-incidence?. 18 Marks)

(b) Number Suppose sunlight just outside Earth's atmosphere has an intensity of 1.95 kW/m². Calculate (a) Em and (b) Bm for sunlight there, assuming it to be a plane wave. (a) Number i Units Units

A light source produces a beam of unpolarised light of intensity 20 W m−2. This is incident onone ideal linear polariser with transmission axis vertical, then a second ideal linear polariser withtransmission axis at 30 degrees from the vertical, and then a third ideal polariser with axis at 60degrees from the vertical (in the same direction as the second).Calculate the intensity transmitted after the third linear polariser, and write down the polarisationstate.

Very short pulses of high-intensity laserbeams are used to repair detached portions of the retina of the eye. Thebrief pulses of energy absorbed by the retina weld the detached portionsback into place. In one such procedure, a laser beam has a wavelengthof 810 nm and delivers 250 mW of power spread over a circularspot 510 mm in diameter. The vitreous humor (the transparent fluid thatfills most of the eye) has an index of refraction of 1.34. What average pressure would the pulse of the laser beam exert at normal incidence on a surface in air if the beam is fully absorbed?

A radiometer has two square vanes (1.0 cm by 1.0 cm), attached to a light horizontal cross arm, and pivoted about a vertical axis through the center, as shown in the figure. The center of each vane is diboth from the axis. One vane is silvered and is perfectly reflecting. The other vandit blaakeros and and pivated aboutna trtice with intensity of 500 W/m is incident perfectly perpendicular to the front of both vanes. 1. Calculate the radiation pressure on the reflecting side. Then, using the fact that Pressure = Force/Area, calculate the total force on the reflecting side. 2. Do the same as part (a) for the absorbing side. 3. Now, recall that torque,, where r is the distance from the axis of rotation. Using your answers to (a) and (b). calculate the total torque on the radiometer. Keep in mind that the two torques will oppose each other because they are on opposite sides of the axis!

Consider an electromagnetic wave traveling in a vacuum chamber,that enters a Diamond thin-film, located in the apparatus. What isthe speed of the electromagnetic wave as it travels in the Diamondthin film?

Given that 100 W/m? of a randomly polarized (unpolarized) light is incident normally on a stack of ideal linear polarizers that are positioned one behind the other with the transmission axis of the first vertical, the second at 30° from the vertical, the third at 60° from the vertical and the fourth at 90° from the vertical axis. How much light emerges after each polarizer?