1. A beam of blue light shines through air onto a block of plastic, striking at an angle of 62.7° to the normal. Ifthe beam is bent such that it makes a 48.1° angle with the normal inside the plastic, and the wavelength ofthe light inside the plastic is 390 nm, what is its frequency?

Answered: Image /qna-images/answer/4c7de5ba-04b7-44c4-b3bd-927ca8963a91.jpg

Answered: 1. A beam of blue light shines 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 86AP: The movable mirror of a Michelson interferometer is attached to one end of a thin metal rod of...

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In Figure P37.52, suppose the transmission axes of the left and right polarizing disks are perpendicular to each other. Also, let the center disk be rotated on the common axis with an angular speed . Show that if unpolarized light is incident on the left disk with an intensity Imax, the intensity of the beam emerging from the right disk is I=116Imax(1cos4t) This result means that the intensity of the emerging beam is modulated at a rate four times the rate of rotation of the center disk. Suggestion: Use the trigonometric identities cos2=12(1+cos2) and sin2=12(1cos2). Figure P37.52
To save money on making military aircraft invisible to radar, an inventor decides to coat them with a nonreflective material having an index of refraction of 1.20, which is between that of air and the surface of the plane. This, he reasons, should be much cheaper than designing Stealth bombers. (a) What thickness should the coating be to inhibit the reflection of 4.00-cm wavelength radar? (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?
Figure P24.69 shows a radio-wave transmitter and a receiver, both h = 50.0 m above the ground and d = 6.00 102 m apart. The receiver can receive signals directly from the transmitter and indirectly from signals that bounce off the ground. If the ground is level between the transmitter and receiver and a /2 phase shift occurs upon reflection, determine the longest wavelengths that interior (a) constructively and (b) destructively. Figure P24.69
A Marconi antenna, used by most AM radio stations, consists of the top half of a Hertz antenna (also known as a half-wave antenna because its length is /2). The lower end of this Marconi (quarter-wave) antenna is connected to Earth ground, and the ground itself serves as the missing lower hall. What are the heights of the Marconi antennas for radio stations broadcasting at (a) 560 kHz and (b) 1 600 kHz?
(a) A narrow beam of light containing yellow (580 nm) and green (550 nm} wavelengths goes from polystyrene to air, striking the surface at a 30.0° incident angle. What is the angle between the colors when they emerge? (b) How far would they have to travel to be separated by 1.00 mm?
The movable mirror of a Michelson interferometer is attached to one end of a thin metal rod of length 23.3 mm. The other end of the rod is anchored so it does not move. As the temperature of the rod changes from 15°C to 25 C , a change of 14 fringes is observed. The light source is a He Ne laser, =632.8 nm . What is the change in length of the metal bar, and what is its thermal expansion coefficient?
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?
10. Three polarizing disks have planes that are parallel and centered on a common axis. The direction of the transmission axis (dashed line) in each case is shown relative to the common vertical direction. A polarized beam of light (with its axis of polarization parallel to the horizontal reference direction) is incident from the left on the first disk with intensity S 780 W/m². Calculate the transmitted intensity if 0₁23.0°, 0 = 32.0°, and 0,= 43.0°. x 28.9 W/m²
1. If you have completely polarized light of intensity 175 W m² through a polarizing filter with its axis at an 95 deg angle to the light's polarization direction? 1= mW m² Y what will its intensity be after passing
1. A 10 mW beam propagates in a medium with n = 1.5+ (5 × 10-4) i and has a vacuum wavelength of 750 nm. What is the wavelength in the material and how far does it go into the material before its power is reduced to 1 mW?
10. A beam of initially unpolarized light of intensity 610 W/m^2 passes through a series of polarizing filters, each one s axis aligned at a 12.9-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 213.2 W/m^2. How many polarizing filters did the beam pass through? 12 8 4 16
light of wavelength λ in a vacuum has a wavelength of 438 nm in water (n=1.33) and a wavelength of 390 nm in benzene. a) what is the wavelength λ? b) using only the given wavelengths, determine the ratio of the index of refraction of benzene to that of water.

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1. A beam of blue light shines through air onto a block of plastic, striking at an angle of 62.7° to the normal. If the beam is bent such that it makes a 48.1° angle with the normal inside the plastic, and the wavelength of the light inside the plastic is 390 nm, what is its frequency?