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You have two lasers one red and one blue. Each laser has a power of 5...
The power output of a laser is measured by its wattage, the number of joules of energy it radiate...
The power output of a laser is measured by its wattage, the number of joules of energy it radiates per second (1 W-1Js-1). A520.-mW argon laser produces a beam of blue-green light with a wavelength of 501.7 nm (5.017x10 m (a) Calculate the energy carried by each photon. (b) Calculate the number of photons emitted by the laser per second. J per photorn photons per second
The power output of a laser is measured by its wattage, the number of...
A photon of light produced by a certain laser has an energy of 3.297x10-19). Calculate the...
A photon of light produced by a certain laser has an energy of 3.297x10-19). Calculate the frequency (in Hz) and wavelength (in nm) of the photon. 1 4.976e14 Hz wavelength 2 2 6025 nm What is the total energy (in kJ) in 1 mole of these photons? 198.5 xk What is the color of the emitted light? violet blue green yellow orange red
In an experiment to test the photoelectric effect, Divya shines a 450 nm blue laser at...
In an experiment to test the photoelectric effect, Divya shines a 450 nm blue laser at a sodium target. This produces a current I in a circuit she is using to detect the electrons emitted. Which of the following changes in her experimental setup would double the current in the circuit to 2I ? (The work function of sodium is approximately 2.36 eV.) Double the intensity of the 450 nm blue laser. Replace the laser with a 900 nm infrared...
A lithium target is irradiated with a 248 nm wavelength laser. The work function of lithium...
A lithium target is irradiated with a 248 nm wavelength laser. The work function of lithium is 2.9 eV. Find: (a) The minimum frequency of photons that would exhibit the photoelectric effect in lithium. (b) The maximum velocity (in meters per second) of photoelectrons observed. (c) Now the same laser is used on a platinum target (work function of 5.12 eV), instead of lithium. Which of the following statements is correct? Justify to get full credit. (i) Photoelectrons from platinum...
A photoelectric experiment is performed by separately shining a laser at 450 nm (blue light) and...
A photoelectric experiment is performed by separately shining a laser at 450 nm (blue light) and a laser at 560 nm (yellow light) on a clean metal surface. Assume that each laser is above the threshold frequency and delivers the same number of photons per second. Which laser will eject electrons with shorter de Broglie wavelength?
A helium-neon laser emits light of wavelength 632.8 nm and has a power output of 2.0...
A helium-neon laser emits light of wavelength 632.8 nm and has a power output of 2.0 mW. How many photons are emitted per second by this laser? ________ photons/s
1. a. blue ray laser has a wavelength of 410 nm. a. what is the frequency...
1. a. blue ray laser has a wavelength of 410 nm. a. what is the frequency (HZ) b. a 1-second flash of blue ray laser has 5.0E-3 J of energy. how many photons make up the flash ? 2. according to the Bohr model. if He+ ion emits a photon when an electron moves from n=4 to n=2 . will you be able to see this photon with your eyes? calculate the wavelength of the photon . recall visible light...
2. (a) A Helium-Neon "HeNe") laser has a wavelength of 632.8 nm. Work out the energy...
2. (a) A Helium-Neon "HeNe") laser has a wavelength of 632.8 nm. Work out the energy of a single photon from this laser, in Joules. b) Calculate that energy in electron Volts. (c) I shine a 10 mW HeNe laser beam on a piece of paper. The spot on the paper has an area of 3 mm2, and I leave the laser on for 10 seconds. How much energy has hit the paper, in Joules? How many photons have hit...
A sample of silver (with work function Q = 4.52 eV) is exposed to an ultraviolet...
A sample of silver (with work function Q = 4.52 eV) is exposed to an ultraviolet light source (1 = 200 nm), which results in the ejection of photoelectrons. What changes will be observed if: The silver is replaced with aluminum (0 = 4.06 eV)? ООО fewer photoelectrons ejected more photoelectrons ejected no photoelectrons are emitted more energetic photoelectrons (on average) less energetic photoelectrons (on average) Incorrect Half of the ultraviolet light from the source is blocked? fewer photoelectrons ejected...
Questiond 9,11 and 12. how would you aplroach these X9 Identify the phenomena that suggest EMR must...
Questiond 9,11 and 12. how would you aplroach
these
X9 Identify the phenomena that suggest EMR must be treated as a particle. photoelectric effect, Compton Effect, diffraction b. interference, photoelectric effect, diffraction c. photoelectric effect, Compton Effect diffraction, interference, refraction d. 10. Zinc has a work function of 40 eV and is used in a photoelectric cell with light of an energy of 19 eV per photon. Determine the maximum kinetic energy of photoelectrons leaving the cell a. 11 eV 6...
The power output of a laser is measured by its wattage, the number of joules of energy it radiates per second (1 W-1Js-1). A520.-mW argon laser produces a beam of blue-green light with a wavelength of 501.7 nm (5.017x10 m (a) Calculate the energy carried by each photon. (b) Calculate the number of photons emitted by the laser per second. J per photorn photons per second
The power output of a laser is measured by its wattage, the number of...
A photon of light produced by a certain laser has an energy of 3.297x10-19). Calculate the frequency (in Hz) and wavelength (in nm) of the photon. 1 4.976e14 Hz wavelength 2 2 6025 nm What is the total energy (in kJ) in 1 mole of these photons? 198.5 xk What is the color of the emitted light? violet blue green yellow orange red
2. (a) A Helium-Neon "HeNe") laser has a wavelength of 632.8 nm. Work out the energy of a single photon from this laser, in Joules. b) Calculate that energy in electron Volts. (c) I shine a 10 mW HeNe laser beam on a piece of paper. The spot on the paper has an area of 3 mm2, and I leave the laser on for 10 seconds. How much energy has hit the paper, in Joules? How many photons have hit...
A sample of silver (with work function Q = 4.52 eV) is exposed to an ultraviolet light source (1 = 200 nm), which results in the ejection of photoelectrons. What changes will be observed if: The silver is replaced with aluminum (0 = 4.06 eV)? ООО fewer photoelectrons ejected more photoelectrons ejected no photoelectrons are emitted more energetic photoelectrons (on average) less energetic photoelectrons (on average) Incorrect Half of the ultraviolet light from the source is blocked? fewer photoelectrons ejected...
Questiond 9,11 and 12. how would you aplroach
these
X9 Identify the phenomena that suggest EMR must be treated as a particle. photoelectric effect, Compton Effect, diffraction b. interference, photoelectric effect, diffraction c. photoelectric effect, Compton Effect diffraction, interference, refraction d. 10. Zinc has a work function of 40 eV and is used in a photoelectric cell with light of an energy of 19 eV per photon. Determine the maximum kinetic energy of photoelectrons leaving the cell a. 11 eV 6...
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