Suppose you are standing in the dark and facing a 20-W LED bulb 100 meters away. If the diameter of your pupils is about 8 mm under these conditions, about how many photons of visible light enter your eye every second? (Hint: the answer is about 6 billion photons per second)

Suppose you are standing in the dark and facing a 20-W LED bulb 100 meters away. If the diameter of your pupils is about 8 mm under these conditions, about how many photons of visible light enter your eye every second? (Hint: the answer is about 6 billion photons per second)

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter3: The Quantum Theroy Of Light

Section: Chapter Questions

Problem 40P

See similar textbooks

Related questions

Q: Two boxes, A and B, are connected to each end of a light vertical rope, as shown in the following…

A: Step 1: GivenFA = 76.0 NTension in the rope, T = 33.0 NDistance descended by box B, d= 10.6 mTime…

Q: An object at rest on a flat, horizontal surface explodes into two fragments, onewith mass 100g, the…

A: The objective of the question is to find out how far the lighter fragment slides after the…

Q: A cosmic ray proton moving towards the Earth at 4.5 * 107 m/s experiences a magnetic force of 1.95 *…

A: The objective of the question is to find the strength of the magnetic field that a cosmic ray proton…

Q: Galaxy NGC 2342 has a velocity of 5,690 km/s and is at a distance of 74 Mpc away. What is the value…

Q: Don't provide hand writing solution

A: Approach to solving the question: Step 1: Identify the given information: - Diameter of the water…

Q: On planet Mysterio, when the sun is directly overhead the optical depth equals one (τ=1) at an…

A: On planet Mysterio, when the sun is directly overhead the optical depth equals one (τ=1) at an…

Q: A rod of m = 1.3 kg rests on two parallel rails that are L = 0.35 m apart. The rod carries a current…

A: Step 1:Use work-energy principle.W = F x d The change in kinetic energy is given…

Q: Four equally spaced charges of equal magnitude are arranged in a line, as shown. q1(+) q2(+) q3(-)…

A: The objective of this question is to find the forces acting on charge q3 due to the other charges…

Q: 14. * Some of the energy states of a hypothetical atom, in units of electron volts, are E₁ == 31.50…

A: Step 1:

Q: A 6 kg mass is undergoing SHM with frequency 6 cycles/s. If the amplitude is 5.3 cm, calculate the…

A: Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…

Q: Monochromatic light is incident on a pair of slits that are separated by 0.210 mm. The screen is…

Q: Suppose that a stove had a surface area of only 1.97 m2 . What would it's temperature (in kelvins)…

Q: Given a toroid with 150 loops and aradius of 24 cm, find the B-fieldinside if the current through…

A: Approach to solving the question: Detailed explanation: Examples: Key references:

Q: The current-carrying wire loop in the figure on the left lies all in one plane and consists of a…

A: Step 1:

Q: 3. Harry Potter is doing his usual thing of cruising around looking for the Golden Snitch when a…

Q: The force on a loop of wire in a magnetic field shown in the attached image can be used to measure…

A: Step 1:Step 2:

Q: A wire carries a 4.94-A current along the x axis, and another wire carries a 2.58-A current along…

Q: Q. A 75.0 kg boulder is placed at a distance of 1.40 m from the right end of a uniform 2.00 m long…

A: Step 1:Step 2:Step 3:

Q: 1) A blimp (a type of balloon) is filled with 2000 m3 of hydrogen gas. How much mass can the balloon…

A: Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…

Q: Three point charges Q1=22.4uC, Q2=-30.6uC,& Q3=57.3uC,are arranged on the corners of a square of…

A: Step 1: Step 2: Step 3:

Q: Part A In the figure,(Figure 1) take into account the speed of the top surface of the tank and find…

A: Please Rate if this solution clears your doubtThank You

Q: Example 2: Fixing the problem....simple optics. A person who is near-sighted has a far point of 460…

Q: A proton has a total energy of 3 times its rest energy. What is the momentum of this proton? (in Me)…

A: Introduction:It is given that:E = 3ER ....(1) As we know:E2 = p2c2 + ER2 ( Einstein…

Q: ་ Part A Determine the absolute pressure on the bottom of a swimming pool 30.0 m by 8.0 m whose…

A: Pressure is scalar quantity.

Q: A gas phase H19F molecule has a bond length of 91.68 pm and a vibrational force constant,k = 966…

A: Step 2: Calculate the Period of RotationThe period of rotation Tr for a rotational level J is given…

Q: In the pitching motion, a baseball pitcher exerted an average horizontal force of 80 N against the…

A: The objective of the question is to find out the work done by the pitcher on the baseball and the…

Q: Use perturbation theory to calculate the first-order correction to the ground state energy ofan…

A: Solution Any doubt please askThank you

Q: Four long, parallel conductors carry equal currents of I = 5.40 A. The figure below is an end view…

Q: Complete the following nuclear equation: [2x2= 4]:…

A: The objective of the question is to complete the nuclear equations by identifying the missing…

Q: Space Ship A is approaching Earth from the left at a speed of 0.84c relative to earth. Space Ship B…

A: To find the relative speed of spaceship A relative to spaceship B, we can use the relativistic…

Q: In the pitching motion, a baseball pitcher exerted an average horizontal force of 80 N against the…

A: The objective of this question is to calculate the work done by the pitcher on the baseball. In…

Q: Part A What is the speed of an electron with a de Broglie wavelength of 0.30 nm ? Express your…

A: To find the speed of an electron with a given de Broglie wavelength, we can use the de Broglie…

Q: In the photoelectric effect, the greater the work functiona. the greater the speed of an electronb.…

A: The objective of the question is to understand the relationship between the work function and…

Q: Below is an energy-level diagram for the hydrogen atom. n=co n=4 n=3 n=2 E=0 E = -0.85 eV E=-1.51 eV…

A: as the given energy diagramopt (A): E=-3.4ev-(-13.6ev)=10.2ev greater than photon energy.opt(B):…

Q: H-e-l-p only Handwritten

A: Step 1:Step 2:

Q: 44.What term is associated with Donald T.Campbell's concept of evolutionary epistemology?…

A: The objective of the question is to identify the term that is associated with Donald T. Campbell's…

Q: Two particles are launched sequentially. Particle 1 is launched with speed 0.393 c to the east.…

Q: a string has a measured length of 267+/-0.2 cm and a mass of 0.7+/-0.1g. the string is fixed to a…

A: Part A Step 2:

Q: 12455 Cs has a half-life of 30.8 seconds.a) If we have 9.7 µg of Cs initially, how many Cs nuclei…

A: The objective of the question is to calculate the initial number of Cesium nuclei, the number of…

Q: In the figure, a climber with a weight of 540 N is held by a belay rope connected to her climbing…

A: Step 1:

Q: Please please please answer super super fast please

Q: What is the impulse on a 3.0 kg object that experiences the force described by this graph?

A: Step 1:Step 2: The equation impulse (I)=F.Δt The area under the graph curve gives the impulse (I)…

Q: Scenario 2: Hospital MRI scan • Operating personnel must wear the standard clothing and footwear…

A: Standard Clothing and Footwear: In a hospital environment, especially in areas like MRI facilities,…

Q: A sample of a particular radioisotope is placed near a Geiger counter, which is observed to…

Q: One type of BB gun uses a spring-driven plunger to blow the BB from its barrel. (a) Calculate the…

A: Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…

Q: Final Exam Page 1 of 20 Page 1: 1 Page 2: 2 Page 3: I w Page 4: Previous Page Question 1 (1 point)…

Q: questions and answers about newtons 1st law and 2nd law

A: The objective of this question is to understand and explain Newton's first and second laws of…

Q: Two speakers emit identical sound waves. At the point indicated, it is a loud spot and therefore…

A: Understanding Constructive Interference:Constructive interference occurs when sound waves overlap in…

Q: The figure shows an 7.9 kg stone at rest on a spring. The spring is compressed 8.9 cm by the stone.…

Q: Mid-Pacific Science 3. Create an isotope of platinum (atomic #78) that undergoes alpha (a) decay. a.…

A: The objective of the question is to understand the process of alpha decay in an isotope of platinum…

Question

Suppose you are standing in the dark and facing a 20-W LED bulb 100 meters away. If the diameter of your pupils is about 8 mm under these conditions, about how many photons of visible light enter your eye every second?

(Hint: the answer is about 6 billion photons per second)

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

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

Show that the energy E in eV of a photon is given by E=1.241106 m/A. where A is its wavelength in meters.
What is the momentum of a 4-cm microwave photon?
If everything radiates electromagnetic energy, why can we not see objects at room temperature in a dark room?
What is the momentum of a 589-nm yellow photon?
Speculate as to why UV light causes sunburn, whereas visible light does not.
(a) What is the ratio of power outputs by two microwave ovens having frequencies of 950 and 2560 MHz, if they emit the same number of photons per second? (b) What is the ratio of photons per second if they have the same power output?
What is the energy of a photon whose momentum is 3.01024 kg• m/s ?
A 900-W microwave generator in an oven generates energy quanta of frequency 2560 MHz. (a) How many energy quanta does it emit per second? (b) How many energy quanta must be absorbed by a pasta dish placed in the radiation cavity to increase its temperature by 45.0 K? Assume that the dish has a mass of 0.5 kg and that its specific heat is 0.9 kcal/kg • K. (c) Assume that all energy quanta emitted by the generator are absorbed by the pasta dish. How long must we wait until the dish in (b) is ready?
Two cavity radiators are constructed with walls made of different metals. At the same temperature, how would their radiation spectra differ?
Why don't we notice quantization in everyday events?
Ultraviolet (UV) radiation is a part of the electromagnetic spectrum that reaches the Earth from the Sun. It has wave-lengths shorter than those of visible light, making it invisible to the naked eye. These wavelengths are classified as UVA, UVB, or UVC, with UVA the longest of the three at 320 nm to 400 nm. Both the U.S. Department of Health and Human Services and the World Health Organization have identified UV as a proven human carcinogen. Many experts believe that, especially for fair-skinned people, UV radiation frequently plays a key role in melanoma, the deadliest form of skin cancer, which kills more than 8000 Americans each year. UVB has a wave-length between 280 nm and 320 nm. Determine the frequency ranges of UVA and UVB.
Why are ionized gases typically only found in very high-temperature environments?