Question

In: Chemistry

A photoelectric experiment was performed by separately shining a laser at 450 nm (blue light) and...

A photoelectric experiment was performed by separately shining a laser at 450 nm (blue light) and a laser at 560 nm (yellow light) on a clean metal surface and measuring the number and kinetic energy of the ejected electrons. Which light would generate more electrons? Which light would eject electrons with greater kinetic energy? Assume that the same number of photons is delivered to the metal surface by each laser and that the frequencies of the laser lights exceed the threshold frequency.

Solutions

Expert Solution


Related Solutions

In the photoelectric experiment, green light, with a wavelength of 522 nm is the longest-wavelength radiation...
In the photoelectric experiment, green light, with a wavelength of 522 nm is the longest-wavelength radiation that can cause the photoemission ofelectrons from a clean sodium surface. a) What is the work function of sodium, in electron-volts? b) If UV (ultraviolet) radiation of wavelength 250 nm is incident to the sodium surface, whatwill be the kinetic energy of the photoemitted electrons, in electron-volts?
In the photoelectric effect experiment, a light photon with a wavelength λ=525 nm hits a metallic...
In the photoelectric effect experiment, a light photon with a wavelength λ=525 nm hits a metallic cesium (work function = 3.43 ×10−34 J).\ What is the kinetic energy of the photoelectron produced?
Consider the following: (i) blue light of wavelength 450 nm, traveling through water (ii) yellow light...
Consider the following: (i) blue light of wavelength 450 nm, traveling through water (ii) yellow light of wavelength 580 nm, traveling through air (iii) red light of wavelength 670 nm, traveling through glass a) Calculate the speeds of each color of light in their respective mediums. b) Rank from slowest-to-fastest these colors of light in their respective mediums. c) Rank from slowest-to-fastest these colors of light in vacuum.
The Photoelectric Effect Lab 10 Prelab Questions : Predictions If the light shining on the metal...
The Photoelectric Effect Lab 10 Prelab Questions : Predictions If the light shining on the metal becomes brighter, will the kinetic energy of the emitted electrons increase? If the light shining on the metal becomes brighter, will the number of electrons being emitted per second (the photo-current) increase? If the frequency of the light shining on the metal is increased, will the number of electrons being emitted per second (the photo-current) increase? If the frequency of the light shining on...
1) The light shining on a diffraction grating has a wavelength of 477 nm (in vacuum)....
1) The light shining on a diffraction grating has a wavelength of 477 nm (in vacuum). The grating produces a second-order bright fringe whose position is defined by an angle of 9.71°. How many lines per centimeter does the grating have? 2) The wavelength of the laser beam used in a compact disc player is 566 nm. Suppose that a diffraction grating produces first-order tracking beams that are 1.1 mm apart at a distance of 3.1 mm from the grating....
In an experiment on the photoelectric effect, a beam of monochromatic light is aimed at a...
In an experiment on the photoelectric effect, a beam of monochromatic light is aimed at a nickel-plated cathode. A scientist uses mathematical formulas to calculate the maximum speed of the electrons that the cathode releases. Which constant most limits the precision of the calculation? the charge of one electron the mass of an electron the work function of nickel Planck’s constant Which example illustrates a behavior called “photoconductivity”? A metallic film conducts electricity when an electric potential is applied across...
The emission wavelength lies between 275 nm and 450 nm and the light yield per neutron...
The emission wavelength lies between 275 nm and 450 nm and the light yield per neutron is reported to be 20000 photons/MeV neutron energy (a) What largest work function of a material used for a photo cathode would be acceptable that still allows detection of an emission originating from the scintillator? (b) What is the maximum kinetic energy of electrons emitted from the photo cathode, given the emission wavelength range of the scintillator? (c) How much charge is being generated...
When 210 nm light falls on a metal, the current through a photoelectric circuit is brought...
When 210 nm light falls on a metal, the current through a photoelectric circuit is brought to zero at a stopping voltage of 1.54 V . What is the work function of the metal? Express your answer using three significant figures.
Laser light from argon ion laser of wavelength 488.0 nm passes through a diffraction grating. The...
Laser light from argon ion laser of wavelength 488.0 nm passes through a diffraction grating. The first bright spots occur at an angle 6.726 degree left and right from the central maximum. How many additional pares of bright spots are there beyond the first bright spots?
In an experiment designed to measure the speed of light, a laser is aimed at a...
In an experiment designed to measure the speed of light, a laser is aimed at a mirror that is 47.5 km due north. A detector is placed 116 m due east of the laser. The mirror is to be aligned so that light from the laser reflects into the detector. (a) When properly aligned, what angle should the normal to the surface of the mirror make with due south? (b) Suppose the mirror is misaligned, so that the actual angle...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT