Question

In: Physics

a clean nickel surface is exposed to light of wavelength 235nm. what is the maximum speed...

a clean nickel surface is exposed to light of wavelength 235nm. what is the maximum speed of the photoelectrons emmited from This surface?

Solutions

Expert Solution

Work function of Nickel is 5.01 eV. According to the photoelectric effect law maximum kinetic energy of electron is the excess amount of energy presesnt in the light photon over the work function.For a photon . where E is the energy of light photon h=planks constant e=electron charge c= speed of light . Energy of given photon . Work function .

where K.E. is kinetic energy of photoelectron.


Related Solutions

1. A coupon of very pure Gold and highly clean surface is exposed to an Argon...
1. A coupon of very pure Gold and highly clean surface is exposed to an Argon Fluoride (ArF) excimer laser beam of wavelength 193.4±0.2 nm inside an ESCA (Electron Spectroscopy for Chemical Analysis) ultrahigh vacuum spectrometer. The coupon surface faces the entrance aperture of a hemispherical electrostatic energy analyzer and detector. The coupon and the analyzer entrance aperture are electrically connected together at ground potential (zero Volts). A fraction of the photo-emitted electrons enters the analyzer and their energy distribution...
What would the wavelength of maximum be for infrared radiation from the surface of Mercury? ranges...
What would the wavelength of maximum be for infrared radiation from the surface of Mercury? ranges from ____  nm to ____  nm What about for the moon? ranges from _______  nm to _______  nm
What is the maximum wavelength capable of removing a single electron from the surface of solid...
What is the maximum wavelength capable of removing a single electron from the surface of solid rubidium if the work function (binding energy) for rubidium is 208.4 kJ/mol?
When a plant is exposed to light at a wavelength of 680 nm, more oxygen is...
When a plant is exposed to light at a wavelength of 680 nm, more oxygen is generated than the plant is exposed to light at a wavelength of 700 nm. Why? And if you receive the light of 680nm and 700nm together, please explain if the oxygen production is more than receiving each wavelength separately.
Light of a given wavelength is used to illuminate the surface of a metal, however, no...
Light of a given wavelength is used to illuminate the surface of a metal, however, no photoelectrons are emitted. In order to cause electrons to be ejected from the surface of this metal you should: a. use light of the same frequency but decrease its intensity b. use light of a higher frequency c. use light of the same frequency but increase its intensity d. use light of a longer wavelength Consider the various frequencies of the three photons emitted...
The maximum kinetic energy of photoelectrons is 2.80 eV . When the wavelength of the light...
The maximum kinetic energy of photoelectrons is 2.80 eV . When the wavelength of the light is increased by 50%, the maximum energy decreases to 1.30 eV . What is the work function of the cathode? What is the initial wavelength?
1. Light of wavelength 620nm in air is incident on a surface of a flat piece...
1. Light of wavelength 620nm in air is incident on a surface of a flat piece of glass with an index of refraction of 1.50 with an angle of incidence of 30°. a.What is the angle of refraction? -Answer: 19.5° b. Find the wavelength and frequency of light in glass. Answer: 413nm, 4.84x1014Hz c.Explain under what circumstances “total internal reflection” can be observed at the boundary between air and this piece of glass. Be as specific as possible.
A light source of wavelength λ illuminates a metal and ejects photoelectrons with a maximum kinetic...
A light source of wavelength λ illuminates a metal and ejects photoelectrons with a maximum kinetic energy of 1.12 eV. A second light source of wavelength λ/2 ejects photoelectrons with a maximum kinetic energy of 3.60 eV. What is the work function of the metal? ____ eV
When ultraviolet light with a wavelength of 400 nm falls on acertain metal surface, the...
When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is 1.10 eV . Part A What is the maximum kinetic energy K0 of the photoelectrons when light of wavelength 280 nm falls on the same surface? Use h = 6.63×10−34 J⋅s for Planck's constant and c = 3.00×108 m/s for the speed of light and express your answer in electron volts. View Available Hint(s) K0K_0 = eV
When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the...
When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is 1.10 eV.What is the maximum kinetic energy K0 of the photoelectrons when light of wavelength 310 nm falls on the same surface? Use h = 6.63×10−34 J⋅s for Planck's constant and c = 3.00×108 m/s for the speed of light and express your answer in electron volts.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT