The photoelectric effect can be an important heating mechanism for the grains of dust found in interstellar clouds. Ultraviolet photons (^~100 nm) strike small dust grains, eject electrons and leave a positive charge behind. If the average energy of a ejected electron is 5 eV (1 eV=1.602x10-19 J), estimate the work function of a typical dust grain.

Q: In a particular photoelectric experiment, a stopping potential of 2.1 V is measured when ultraviolet…

A: Concept used: Photoelectric effect is the process in which electron is ejected from surface of metal…

Q: a) A gamma-ray photon produces an electron and a positron. each with a kinetic energy of 150 kev.…

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Q: What is the maximum speed (in km/s) of a photoelectron emitted from a surface whose work function is…

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Q: What is the velocity of an electron emitted by lithium (work function = 2.90 e.v.) if light with a…

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Q: Light strikes a metal surface, causing photoelectric emission. The stopping potential for the…

A: Stopping potential of ejected electrons,  Work function of the metal,

Q: Fresh out of university you've been hired to do some photoelectron spectroscopy. You have a lamp…

A: The maximum kinetic energy of the emitted electron is KEmax=hν-φeV=hcλ-φeV+φ=hcλeV+φhc=1λ

Q: In a photoelectric experiment to determine the work function for a particular metal surface, two…

A: a. From the photo electric effect, write the expression of work function. Substitute the…

Q: Light of frequency 7.21 x 10“ Hz is incident on a metal surface. Electrons with a maximum speed of…

A: The concept behind this question is for threshold frequency for photoemission of electrons. We have…

Q: Consider photons at temperature T= 300K in a cubic box of volume 1 m' with periodic boundary…

A: Given:          T=300K          V=1 m3          To find:    a) Total number of photon and energy of…

Q: A photon with momentum 1.32×10-23 kg m/s² scatters off a free electron by an angle of 43 degrees.…

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Q: A strange metallic rock is found and is being tested. Suppose that light with a frequency of 9.60 ✕…

A: Given that Incident frequency f = 9.60 X 1014 Hz Stopping potential V0 = 1.10 V

Q: This system is qualitatively similar to one that you may be more familiar with: a mass on a spring.…

A: Given that equation of motion. τ=-kθ Since Then we have to find out time period. Let I is moment of…

Q: The work function of tungsten is 4.5 eV. What is the photoelectric threshold wavelength for…

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Q: during an experiment 5.3*10^4 Hz light shines on a metal plate and the photoelectric effect occurs.…

A: Momentum p= hfc  where h is Planck's constant             f is frequency of incident light ,and…

Q: A 35.0 keV collides with an electron. The photon scattered at 90 degree. By what percentage is the…

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Q: When a metal was exposed to photons at a frequency of 1.25 × 10¹5 s¯¹, electrons were emitted with a…

A: Given Data: The frequency of each photon is .The maximum kinetic energy of the emitted electron is…

Q: The photoelectric effect is the emission of electrons from a metal when light falls on it. The…

A: Step 1: Step 2: Step 3: Step 4:Step 5:

Q: Two light sources are used in a photoelectric experiment to determine the work function for a…

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Q: Q-25: Green light shining on sodium surface causes photoelectrons with maximum kinetic energies of…

A: Given that --- maximum kinetic energies = 0.02 e V. work function of sodium= 2.28 e V, Question ?…

Q: In class, we derived the formula for the power radiated by an accelerating charge. The classical…

A: Given Data: Kinetic energy (K) = 13.6 eV = 13.6×1.6×10-19 J = 21.76×10-19 J.Radius (r) = 0.0529 nm =…

Q: During an experiment 8.7×10¹4 Hz light shines on a metal plate and the Photoelectric Effect occurs.…

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Q: In a photoelectric effect experiment, electrons emerge from a copper surface with a maximum kinetic…

A: K=1.10 eVW=4.65 eV

Q: Light of frequency 7.21×1014 Hz is incident on a metal surface. Electrons with a maximum speed of…

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Q: An energy storage system is being designed using a number of concrete blocks and electrically driven…

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Q: Problem 4: A photon originally traveling along the x axis, with wavelength λ = 0.100 nm is incident…

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Q: light source is used in a photoelectric effect experiment to determine the work function of a…

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Q: butane torch is a tool in which butane is burned to create a flame. A detector, located at 2meters…

A: Temperature T = 3916.84 kelvin

Q: The energy conservation principle that applies to the photoelectric experiment is Ephoton =…

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Q: Two light sources are used in a photoelectric experiment to determine the work function of a…

A: When the light of a particular frequency falls on certain materials it will release electrons this…

Q: A strange metallic rock is found and is being tested. Suppose that light with a frequency of 9.40 ✕…

A: Given: Frequency ν=9.40×1014 Hz Stopping potential Vs=1.50 V Standard data used: Planck's constant…

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

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Q: he work function of lithium is  W0 = 2.93 eV. (a) What is the maximum wavelength of incident light…

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