A beam of initially unpolarized light of intensity 786 W/m^2 passes through a series of polarizing filters, each one s axis aligned at a 27.7-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 71.5 W/m^2. How many polarizing filters did the beam pass through?

A beam of initially unpolarized light of intensity 786 W/m^2 passes through a series of polarizing filters, each one s axis aligned at a 27.7-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 71.5 W/m^2. How many polarizing filters did the beam pass through?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter3: Interference

Section: Chapter Questions

Problem 47P: To save money on making military aircraft invisible to radar, an inventor decides to coat them with...

See similar textbooks

Similar questions

A laser beam at a wavelength of 1.11 μm is coupled into an optic fiber, resulting in 138.2 mW of light inside the fiber initially. The fiber is 4.75 km long and has an absorption coefficienct of 1.562 dB/km. What light power, in mW, is at the end of the fiber?
In the following, assume that lightbulbsradiate uniformly in all directions and that 5.0% of their power isconverted to light. (a) Find the average intensity of light at a point2.0 m from a 120-W red lightbulb 1l = 710 nm2. (b) Is the average intensity 2.0 m from a 120-W blue lightbulb 1l = 480 nm2greater than, less than, or the same as the intensity found in part(a)? Explain. (c) Calculate the average intensity for part (b).
Unpolarized light passes first through a polarizing filter with a vertical axis then through a second filter with its axis 51o from vertical. If the intensity of the unpolarized light is 620 W/m2, what is the intensity of the light after it passes through the second filter? Please give your answer in W/m2.
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
A plane wave is normally propagating from air into a homogenous medium wi th Er2 = 3, H2 = 1, o, = 0 The incident E-field is known as E10 = 1x10-3 V/m The initial phase of the EM wave is 0 at the medium interface. Determine the (1) r eflection coefficient, transmission coefficient, and standing wave ratio at the i nterface (2) the amplitudes of the reflection and transmission waves for the E -field and H-field.
A solar car has a roof dimensions of 149cm x 81cm for solar cells. Calculate the electrical power available, assuming total energy loss of 86% and a constant light intensity of 934 W/ m?. Answer:
Q₁: The radiation intensity of an antenna is given by: U = a cos² (b0) (where a and b are constants) and it is equal to 1 (W/unit solid angle) at the half power angle. If a normalized radiation intensity is shown in figure blow, find: a) Prad b) Rrad c) Do 290 280 270 260 300 310 250 240 230 320 220 d) HPBW and FNBW 330 210 340 200 350 0 10 1 190 1 1 1 10. I 0. 10.5 0.4 0.9 48 10.3 0.2 0. 180 170 20 160 30 150 40 140 50 60 70 130 120 80 90 100 110
A circular radar antenna on a Coast Guard ship has a diameter of 2.10 m and radiates at a frequency of 18.0 GHz. Two small boats are located 5.00 km away from the ship. How close together could the boats be and still be detected as two objects?
A solar cooker has a rectangular light collection area of 80 cm X 125 cm. If sunlight of intensity 1.2 kW/m² is incident on its surface at an angle of 60 degrees with respect to the normal, calculate the power collected by the solar cooker. O 0.4 kW 0 1 kW O 1.2 kW O 0.6 kW
Imagine you are at a location where some incident light source provides light at an intensity of 10 W/m^2 Now you move to double your distance from the light source (aka your distance is 2 times its initial value) What is the intensity of the light at this new location (in units of W/m^2, provide only the number)? hp & %23 24 7 8. 3 4. y u e r j k b .. .. * 00 In
Problem 1. A digital cell phone emits 0.60Wattsof 1.9GHz= 1.9×109Hzradio waves. (Assume thewaves are passing through air so that their speed is effectively the vacuum speed of light). At a distance of10cm= 0.1mfrom the cell phone, (d.) Considering what you know (intensity, frequency, wavelength), etc. about these EM waves emitted by thecell phone, do you think the EM waves radiating from your phone are capable of causing bodily harm toa cell phone user?
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!