• Suppose a VLC unit uses an LED that produces light with anaverage intensity of 400 mW/cm2. What is the rms value of theelectric field in this beam of light?A. 1230 N>C B. 390 N>CC. 1700 N>C D. 2.1 * 105N>C

• Suppose a VLC unit uses an LED that produces light with anaverage intensity of 400 mW/cm2. What is the rms value of theelectric field in this beam of light?A. 1230 N>C B. 390 N>CC. 1700 N>C D. 2.1 * 105N>C

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 12CQ: A 2.0-mW helium-neon laser transmits a continuous beam of red light of cross-sectional area 0.25...

See similar textbooks

Related questions

Q: $2 Subjective type . Comvet loo jaules fencagt into [E] = [ML²T=] Nows 2- د Cر 2- را عه ( ) ए) G)"…

A: Given Data : The energy in joules is given as 100J

Q: One of the two microwave frequencies authorized for use in microwave ovens is 900 MHz. • Calculate…

Q: The digital displays of watches and other devices are normally polarized. What related problem can…

Q: Unpolarized light passes through three polarizing filters. The first filter has it transmission axis…

Q: 9. A polarized light is incident on several polarizing disks whose planes are parallel and centered…

A: It is given that the polarized light wave is passes through a polarizer, the intensity of the light…

Q: Polarization Experiment 0.8 0.6 xx 04 0.2 50 100 150 200 250 300 350 Theta (degrees) -cos^2(theta)…

A: The angle by which the observed data is out of phase with cos2(theta) is 50°. Hence, the second…

Q: Three polarizing filters are arranging in a straight line by which the axes of transmission of the…

Q: (II) A spherically spreading EM wave comes from an 1800-Wsource. At a distance of 5.0 m, what is the…

A: The expression for the energy per unit time per unit area is, I=12ε0cE02…

Q: Natural light falls on a system of three polarizers with transmission coefficients 0.9, 0.92 and…

A: Malus law: When polarised light of intensity I0 is incident on a polarizer, the transmitted…

Q: A 50 mW laser beam is polarized horizontally. It then passes through two polarizers. The axis of the…

Q: Example_8 The filament in a clear incandescent light bulb radiates visible light at a power of 5.00…

Q: 10. A ray of ordinary light is incident on a system of three polaroids which are arranged in…

Q: A horizontal 5.0 mW laser beam that is vertically polar- 54 ized is incident on a polarizing sheet…

A: Intensity = Power permit area Power of the beam = P×A since the area of cross-section of the laser…

Q: 1. Verify that the correct value for the speed of light c is obtained when numerical values for the…

A: Permeability of free space= 1.25663706 × 10-6 m kg s-2 A-2 Permittivity of free space= 8.85418782 ×…

Q: Which requires a physical medium in which to travel—light, sound, or both? Explain.

A: The mechanical wave requires a physical medium for its prorogation. And the sound wave is the…

Q: I am having trouble understanding this question, but I have a few guesses as to what the answer…

A: Given:- An ideal polarizing sheet transmits 90% of the incident partially polarized light. The…

Q: A polariser made of Polaroid polymer has an intensity transmittance of 90 percent for light…

A: The intensity of light transmitted through a polarizer is given by Malus law, I = I0* cos2(theta)…

Q: Light Photocell Polarizer Insert Analyzer

A: I0 = 160 W/m2 θ = 31°

Q: I Review Part A Vertically polarized light with an intensity of 0.65 W/m? passes through a polarizer…

Q: Verify the numerical relationship between c, the speed of light, and ?0 and ?0, the permeability and…

A: Let us write down Maxwell's equations in vacuum: ∇·E=0 1∇×E=-∂B∂t…

Q: Unpolarized light passes through two ideal Polaroid sheets. The axis of the first is vertical and…

Q: 1. If the electric field strength of a plane wave is 2V/m, what is the strength of magnetic field H…

A: Given data: Electric field strength of a plane wave is, E=2 V/m.

Q: 7. Obtain Maxwell's equations and deduce an expression for the velocity of propagation of plane…

Q: Red light has an magnetic field component amplitude Bm = 8 μT, and wavelength λ= 440 nm -…

Q: At a garage sale you find a pair of “Polaroid” sunglasses priced tosell. You are not sure, however,…

A: Observe the light from the pair of Polaroid sunglasses. Then rotate one of the glass with respect to…

Q: 8. How long does it take sunlight to travel from the Sun to Earth?

A: Sunlight is a portion of the electromagnetic radiation emitted by the Sun. The sunlight travels with…

Q: . While wearing your Polaroid sunglasses at the beach, you noticethat they reduce the glare from the…

A: The light that is reflected from a horizontal surface has a polarization in the horizontal…

Q: Find the electromagnetic energy stored in the air gap between two very large magnetic pole pieces,…

Q: At what angle will the microwave be completely polarized? explain

A: Ans:- Brewster's law:- The maximum polarization of a ray of light may be achieved by letting the ray…

Q: Imagine that you have two identical perfect linear polarizers and a source of natural light. Place…

Q: If you wish to observe features that are around the size of atoms, say 7.5 × 10-10 m, with…

A: Given size of atoms is 7.5*10-10 m

Q: Can sound waves be polarized? How about traveling waves on a string? Explain.

A: Explain:-Can sound waves be polarized? The sound wave not polarized. because the sound wave is…

Q: Unpolarized light of intensity lo =208 W/m² passes through a first polarizer with in the vertical…

A: Let the angle from the verticle of the axis of the second polarizing filter is = 84 ° Given that…

Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

Question

• Suppose a VLC unit uses an LED that produces light with an
average intensity of 400 mW/cm2
. What is the rms value of the
electric field in this beam of light?
A. 1230 N>C B. 390 N>C
C. 1700 N>C D. 2.1 * 105
N>C

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Verify that the correct value for the speed of light c is obtained when numerical values for the permeability and permittivity of free space (0 and 0) are entered into the equation c=100.
Can a sound wave in air be polarized? Explain.
Integrated Concepts Suppose you put on two pairs of Polaroid sunglasses with their axes at an angle of 15.0°. How much longer will it take the light to deposit a given amount of energy in your eye compared with a single pair of sunglasses? Assume the lenses are clear except for their polarizing characteristics.
. While wearing your Polaroid sunglasses at the beach, you noticethat they reduce the glare from the water better when you are sitting upright than when you are lying on your side. Explain
At a garage sale you find a pair of “Polaroid” sunglasses priced tosell. You are not sure, however, if the glasses are truly Polaroid, orif they simply have tinted lenses. How can you tell which is thecase? Explain
A 2.0-mW helium-neon laser transmits a continuousbeam of red light of cross-sectional area 0.25 cm2 . If thebeam does not diverge appreciably, how would its rmselectric field vary with distance from the laser? Explain.
Verify the numerical relationship between c, the speed of light, and ?0 and ?0, the permeability and permittivity of the vacuum. Include a verification of the units, using dimensional analysis.
Red light has an magnetic field component amplitude Bm = 8 μT, and wavelength λ= 440 nm - calculate the frequency of the light
Two polarizers are oriented at 42.0° to one another.Light polarized at a 21.0° angle to each polarizer passesthrough both. What is the transmitted intensity (%)?
Unpolarized light with intensity Io is incident on a series of polarizing sheets. The first sheet has itstransmission axis oriented at 90°. A second polarizer has its transmission axis oriented at 62° .Determine the fraction of light intensity exiting the second sheet?
(II) A spherically spreading EM wave comes from an 1800-Wsource. At a distance of 5.0 m, what is the intensity, andwhat is the rms value of the electric field?
When unpolarised light is passed through a polariser, and then through an analyser with its polarising axis at a right angle to the axis of the polariser, the intensity of the remaining light is approximately zero. When a second polarising sheet is placed between the polariser and the analyser, the final intensity is much brighter and clearly non-zero. Explain how this can happen.