Chemistry Chemistry Practice Problems Solutions Library

Photoelectric Effect Solutions Library

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43 solutions

Photoelectric Effect

Q. The maximum wavelength of light that will cause ejection of a photoelectron in silver metal is 262 nm. What is the threshold energy or minimum ener...

Solved • Nov 22, 2019

Photoelectric Effect

Q. What did Einstein propose to explain the photoelectric effect?a. Metals are very reflective to light.b. High intensity light is necessary to observ...

Solved • Sep 15, 2019

Photoelectric Effect

Q. Determine the shortest frequency of light required to remove an electron from a sample of tungsten metal, if the binding energy of tungsten is 3551...

Solved • Sep 13, 2019

Photoelectric Effect

Q. The six metals have the work functions, W.Part A. Rank these metals on the basis of their cutoff frequency. Rank from largest to smallest. To rank ...

Solved • Jul 9, 2019

Photoelectric Effect

Q. What is the threshold frequency ν0 of cesium? Note that 1 eV (electron volt) = 1.60 × 10−19 J. Express your answer numerically in hertz.

Solved • Jul 9, 2019

Photoelectric Effect

Q. If electrons are ejected from a given metal when irradiated with a 11-W red laser pointer, what will happen when the same metal is irradiated with ...

Solved • Nov 12, 2018

Photoelectric Effect

Q. In an experiment to study the photoelectric effect, a scientist measures the kinetic energy of ejected electrons as a function of the frequency of ...

Solved • Nov 12, 2018

Photoelectric Effect

Q. In an experiment to study the photoelectric effect, a scientist measures the kinetic energy of ejected electrons as a function of the frequency of ...

Solved • Nov 12, 2018

Photoelectric Effect

Q. Titanium metal requires a photon with a minimum energy of  6.94 x 10 - 19 to emit electrons.If titanium is irradiated with light of 233 nm, what is...

Solved • Nov 12, 2018

Photoelectric Effect

Q. Titanium metal requires a photon with a minimum energy of  6.94 x 10 - 19 to emit electrons.Is it possible to eject electrons from titanium metal u...

Solved • Nov 12, 2018

Photoelectric Effect

Q. The energy required to dislodge electrons from sodium metal via the photoelectric effect is 275 kJ/mol . What wavelength (in nm) of light has suffi...

Solved • Nov 12, 2018

Photoelectric Effect

Q. The energy required to ionize sodium is 496 kJ/mol. What minimum frequency of light is required to ionize sodium?

Solved • Nov 12, 2018

Photoelectric Effect

Q. We shine light of three different wavelengths—325 nm, 455 nm, and 632 nm —on a metal surface. We record the following observations for each wavelen...

Solved • Nov 12, 2018

Photoelectric Effect

Q. Light from three different lasers (A, B, and C), each with a different wavelength, was shined onto the same metal surface. Laser A produced no phot...

Solved • Nov 12, 2018

Photoelectric Effect

Q. The light emitted from one of the following electronic transitions (n = 4 → n = 3 or n = 3 → n = 2) in the hydrogen atom caused the photoelectric e...

Solved • Nov 12, 2018

Photoelectric Effect

Q. Find the velocity of an electron emitted by a metal whose threshold frequency is 2.25×1014 s-1 when it is exposed to visible light of wavelength 5....

Solved • Nov 12, 2018

Photoelectric Effect

Q. The binding energy of electrons in a metal is 191 kJ/mol. Find the threshold frequency of the metal.

Solved • Nov 12, 2018

Photoelectric Effect

Q. How did the photoelectric effect lead Einstein to propose that light is quantized?

Solved • Nov 12, 2018

Photoelectric Effect

Q. What is the threshold frequency for sodium metal if a photon with frequency 6.66 × 1014 s−1 ejects an electron with 7.74 × 10 −20 J kinetic energy?...

Solved • Oct 22, 2018

Photoelectric Effect

Q. In order to comply with the requirement that energy be conserved, Einstein showed in the photoelectric effect that the energy of a photon (hν) abso...

Solved • Oct 18, 2018

Photoelectric Effect

Q. In his explanation of the threshold frequency in the photoelectric effect, Einstein reasoned that the absorbed photon must have a minimum energy to...

Solved • Oct 18, 2018

Photoelectric Effect

Q. It takes 7.21 x 10 -19 J of energy to remove an electron from an iron atom. What is the maximum wavelength of light that can do this?

Solved • Oct 15, 2018

Photoelectric Effect

Q. It takes 208.4 kJ of energy to remove 1 mole of electrons from an atom on the surface of rubidium metal. (1 mol electrons = 6.022 x 1023 electrons....

Solved • Oct 15, 2018

Photoelectric Effect

Q. The work function of an element is the energy required to remove an electron from the surface of the solid element. The work function for lithium i...

Solved • Oct 15, 2018

Photoelectric Effect

Q. The first ionization energy of carbon is 1.81 aJ. Assuming an ionization efficiency of 22.35%, how many photons of the lowest possible frequency ar...

Solved • May 25, 2017

Photoelectric Effect

Q. It takes 261 kJ/mol to eject electrons from a certain metal surface. What is the longest wavelength of light (nm) that can be used to eject electro...

Solved • Sep 15, 2016

Photoelectric Effect

Q. Determine the longest wavelength of light required to remove an electron from a sample of potassium metal, if the binding energy for an electron in...

Solved • Sep 14, 2016

Photoelectric Effect

Q. In an experiment of the photoelectric effect, an incident beam of ultraviolet radiation shined on a piece of metal and produced electrons with zero...

Solved • Aug 8, 2016

Photoelectric Effect

Q. The photoelectric effect provided evidence for the (wave, particle)-like behavior of light. The phenomenon of diffraction provided evidence for the...

Solved • Aug 1, 2016

Photoelectric Effect

Q. The work function for chromium metal is 4.37 eV. What wavelength of radiation must be used to eject electrons with a velocity of 2500 km/s?

Solved • Aug 1, 2016

Photoelectric Effect

Q. Sodium metal requires a photon with a minimum energy of 4.41 x 10 -19 J to emit electrons. (c) If sodium is irradiated with light of 439 nm, what i...

Solved • Jul 15, 2016

Photoelectric Effect

Q. Molybdenum metal must absorb radiation with a minimum frequency of 1.09 x 10 15 s-1 before it can eject an electron from its surface via the photoe...

Solved • Jul 15, 2016

Photoelectric Effect

Q. Molybdenum metal must absorb radiation with a minimum frequency of 1.09 x 10 15 s-1 before it can eject an electron from its surface via the photoe...

Solved • Jul 15, 2016

Photoelectric Effect

Q. Molybdenum metal must absorb radiation with a minimum frequency of 1.09 x 10 15 s-1 before it can eject an electron from its surface via the photoe...

Solved • Jul 15, 2016

Photoelectric Effect

Q. What is a quantum of light called?a) the wavelengthb) the frequencyc) the amplituded) a photon

Solved • Apr 29, 2016

Photoelectric Effect

Q. Assuming an ionization efficiency of 18.0%, how many photons are needed to ionize 1.00 x 1016 atoms?

Solved • Mar 2, 2016

Photoelectric Effect

Q. R = 2.18x10-18 J;  h = 6.626x10-34 J•sec or 6.626x10-34 kg•m2 sec-1;  c = 3.00 x 10 8 m•sec-1; 1eV= 1.602x10-19 J a.) What is the energy of a photo...

Solved • Feb 24, 2016

Photoelectric Effect

Q. Magnesium metal is used in a photoelectric effect experiment.  The work function for Mg (i.e. the energy required to remove an electron) is 3.68 eV...

Solved • Feb 24, 2016

Photoelectric Effect

Q. Consider two different light sources produce photons of light with wavelengths of 225 nm and 650 nm. If these photons are shined onto zinc metal, w...

Solved • Feb 22, 2016

Photoelectric Effect

Q. The ionization energy of sodium is 496 kJ/mol. In an experiment similar Hertz's experiment to which Einstein famously discovered the photoelectric ...

Solved • Feb 22, 2016

Photoelectric Effect

Q. The figure below shows Ek plotted as a function of v for photoelectric emission from two metals, A and B. Which of the following statements for the...

Solved • Feb 13, 2016

Photoelectric Effect

Q. Determine the shortest frequency of light required to remove an electron from a sample of a metal, if the binding (threshold) energy of the metal i...

Solved • Feb 13, 2016

Photoelectric Effect

Q. Determine the longest wavelength of light required to remove an electron from an atom of a metal, if the binding energy for an electron in that met...

Solved • Feb 13, 2016