Ex4/ the wave length of light falling on a potassium surface is 770nm and thework function of a potassium is equal to 2.3eV. show the photoelectric effecthappening is possible or impossible?Ex5/ The wavelength of the photoelectric threshold for silver is 3.250 x10- m.Determine the velocity of electron ejected from a silver surface by ultravioletlight of wavelength 2.536 x10-0 m

Given wavelength λ = 770 nm = 770 × 10-9 m work function φ₀ = 2.3 eV = 2.3 × 1.6 ×10-19 J = 3.68 ×…

Answered: Ex4/ the wave length of light falling…

Ex4/ the wave length of light falling on a potassium surface is 770nm and the work function of a potassium is equal to 2.3eV. show the photoelectric effect happening is possible or impossible?

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 44P

See similar textbooks

Related questions

Q: Ex3/ For what wavelength of incident photon it shows Compton scattering in which the energy of…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 2. The discrimination distance in microscopes is given by Ax = 1/Sin@x where A is the %3D wavelength…

Q: If a star has a peak wavelength of 450 nm (violet). What is the corresponding frequency of this…

Q: 4. The discrimination distance in microscopes is given by Ax = 1/Sin0x where 2 is the %3D wavelength…

A: Write the given values using suitable variables. Here Δx signifies position uncertainty, 0x…

Q: 2. A particle moving at 1000 m/s travels through an open slit, producing an interference pattern…

A: Given data: velocity of the particle =v= 1000 m/s Mass of alpha particle = m = 6.7 x 10-27 kg first…

Q: Photon energy of the light with a given wavelength could be calculated by the following equation…

A: Given Wavelength of yellow light is λy=600 nm=600×10-9 m Wavelength of blue light is λb=450…

Q: Image intensifiers used in nightvision devices create a bright image from dim light by letting the…

A: a) The photoelectric equation is given as: Here ϕ is the work function of the metal surface or…

Q: Q2:- Light from the sun arrives at the earth, an average of 1.48 × 10" m away, at the rate of 1.4…

A: r = 1.48 x 1011 m PA = 1.4 kW/m2 = 1.4 x 103 W/m2 ϑ = 4.95 x 1014 Hz

Q: 11. A photocell employs photoelectric effect to convert (a) change in the frequency of light into a…

Q: 3. What is the longest wavelength EM radiation that can eject a photoelectron from silver (A=4.73…

A: Work function of silver (A)=4.73 eV Planck's constant (h)=6.626×10-34 J s Speed of light (c)=3×108…

Q: Calculate the frequency and wavelength of a photo having an energy of 1.5 eV

A: Given Data : The energy of the photon is given as E = 1.5 eV.

Q: Problems 1. When hydrogen is energized by a strong electric field or incident ultraviolet light, the…

A: In this question we are given that When hydrogen is energized by a strong electric field or incident…

Q: I was given a old test to practice.

Q: A certain photoelectric devise is sensitive wavelengths up to 940 nm. a. What is the frequency…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: Electrons go through a single slit 300 nm wide and strike a screen 20.0 cm away. At angles of…

A: The de Broglie wavelength λ is the wavelength that is associated with an item in relation to its…

Q: (i) Define the term ‘threshold frequency’ as used in photoelectric effect. (ii) Plot a graph showing…

A: Threshold frequency Threshold frequency is the minimum frequency…

Q: 6. You purchase a 5000 K, 100 watt light bulb from Home Depot. a) What is the wavelength of maximum…

Q: A hydrogen gas is contained inside a glass tube. When a bright light is illuminated, the spectrum…

A: energy of photon is given by E=hcλ where c= speed of light and λ=wavelength of light

Q: Using the detailed balance equation, B1zn, p(hv,,) = Az", + Ban,p(hv,) %3D and -(E,-E) Show that,…

Q: A beam of neutrons with a de Broglie wavelength of 0.240 nm diffracts from a crystal of table salt,…

A: Given: De Broglie wavelength of electron, λ=0.240 nm Interionic spacing, d= 0.282 nm Values…

Q: Determine the minimum frequency required to have a Photoelectric effect for an EM radiation, when…

A: here, The minimum photon energy required to have a photoelectric effect is φ0= hν0 where φ0 is the…

Q: Within 2 minutes, 2 million photons of monochromatic green light are shone on a 3.2 x 10^-6 m^2…

A: Given data: Time t = 2 min Light = green Number of photons n = 2 million Area A=3.2×10-6 m2

Q: Example1: A sodium surface is illuminated with light of wavelength o.300 um. The work function for…

A: The energy of a photon is given by E =h cλ where, h is the Plank's constant, c is the speed of…

Q: 1. You go to a dance club to forget how hard your astronomy class was. What is the frequency of a…

Q: Which has a higher energy? A photon from a light with wavelength, = 730 nm, or a photon from a light…

Q: A piece of metal has a cutoff wavelength of Acutoff-450 nm. Consider illuminating this piece of…

A: Write the given values. λc=450 nm=450×10-9 mλ1=500 nm=500×10-9 mλ2=400 nm=400×10-9 m

Q: 6. The characteristic X-rays have ------ wavelength and ------ intensity than the white radiation.…

Q: Photorefractive keratectomy (PRK) is a laser-based surgical procedure that corrects near- and…

A: n=Number of photonsh=Planck constant=6.626×10−34 Jsλ=Wavelength=193 nmc=Speed of ligth=3×108…

Q: You have a sample of Sodium with a Work Function of 2.28 eV that you are shining light upon to…

Q: 1. What frequency of light is needed to produce electrons of kinetic energy 3.00 eV from…

Q: Ex1 / The minimum wave length for photoelectric emission in tungsten is 230nm. What wave length must…

A: 1 nm = 10-9 m 1eV = 1.6× 10-19 J

Q: The human eye is most sensitive to 560-nm (green) light. What is the temperature of a blackbody that…

Q: The human eye is most sensitive to 560-nm (green) light. What is the temperature of a black body…

A: Wein's law: It states that the product of wavelength corresponding to the maximum intensity and…

Q: 4. Problem. When monochromatic light with a wavelength of 310 nm falls on a surface, the stopping…

A: According to the photoelectric effect, the work function for the metal surface is,

Q: Monochromatic light of a frequency 2.5×10PHZ is incident on a piece of copper foil that has a work…

Q: 1. Townsend 1.8: A helium-neon laser (-633 nm) used in a lecture demonstration of the double- slit…

A: Write the expression for power emitted by the laser , and substitute 5mW for P, 633nm for λ,…

Q: 8. A. What is the name of Instrument A below? Spectroscope Instrument A B. If you use this…

A: A. The name of the instrument is Spectroscope Answer: Spectroscope.

Concept explainers

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

Question

Ex4/ the wave length of light falling on a potassium surface is 770nm and the
work function of a potassium is equal to 2.3eV. show the photoelectric effect
happening is possible or impossible?
Ex5/ The wavelength of the photoelectric threshold for silver is 3.250 x10- m.
Determine the velocity of electron ejected from a silver surface by ultraviolet
light of wavelength 2.536 x10-0 m

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 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

Which aspects of the photoelectric effect cannot be explained without photons? Which can be explained without photons? Are the latter inconsistent with the existence of photons?
Estimate the binding energy of electrons in magnesium, given that the wavelength of 337 nm is the longest wavelength that a photon may have to eject a photoelectron from magnesium photoelectrode.
What is the longest-wavelength EM radiation that can eject a photoelectron from silver, given that the binding energy is 4.73 eV? Is this in the visible range?
(a) Calculate the number of photoelectrons per second ejected from a 1.00-mm2 area of sodium metal by 500-nm M radiation having an intensity of 1.30 kW/m2 (the intensity of sunlight above the Earth's atmosphere). (b) Given that the binding energy is 2.28 eV, what power is carried away by the electrons? (c) The electrons carry away less power than brought in by the photons. Where does the other power go? How can it be recovered?
Estimate the work function of aluminum, given that the wavelength of 304 nm is the longest wavelength that a photon may have to eject a photoelectron from aluminum photoelectrode.