Wavelength of light incident on the metal, λ = 137 x 10-9 m
Energy of incident light, E = hc/ λ = 6.625 x 10-34 x 3 x 108/137 x 10-9 = 14.5 x 10-19 J
Work function of the metal, W = 2.30 eV = 2.30 x 1.6 x 10-19 = 3.68 x 10-19 J
Using Einstein’s photoelectric equation, the maximum kinetic energy of photoelectrons, K = E – W
K = 14.5 x 10-19 - 3.68 x 10-19 = 10.82 x 10-19 J
But, K = ½ m v2
V2 = 2K/m = 2 x 10.82 x 10-19 /9.11 x 10-31 = 2.375 x 1012
The maximum speed of the photoelectrons, v = 1.54 x 106 m/s
**1.54 x 106 m/s
Light with a wavelength of 137 nm is shined on the surface of potassium metal. Photoelectrons...
Light with a wavelength of 137 nm is shined on the surface of potassium metal. Photoelectrons are ejected from the metal's surface. What is the maximum speed of the ejected photoelectrons? The work function of potassium metal is 2.30 eV. O 7.15E5 m/s 9.51E6 m/s 6.32E5 m/s 8.99E5 m/s O 1.54E6 m/s
Light with a wavelength of 137 nm is shined on the surface of potassium metal. Photoelectrons are ejected from the metal's surface. What is the maximum speed of the ejected photoelectrons? The work function of potassium metal is 2.30 eV. O 7.15E5 m/s 09.51E6 m/s 6.32E5 m/s 8.99E5 m/s 1.54E6 m/s
Light with a wavelength of 137 nm is shined on the surface of potassium metal. Photoelectrons are ejected from the metal's surface. What is the maximum speed of the ejected photoelectrons? The work function of potassium metal is 2.30 eV. 7.15E5 m/s 9.51E6 m/s 6.32E5 m/s 8.99E5 m/s 1.54E6 m/s
Light with a wavelength of 137 nm is shined on the surface of potassium metal. Photoelectrons are ejected from the metal's surface. What is the maximum speed of the ejected photoelectrons? The work function of potassium metal is 2.30 eV. 7.15E5 m/s 9.51E6 m/s 6.32E5 m/s 8.99E5 m/s 1.54E6 m/s
Question 17 5 pts Light with a wavelength of 137 nm is shined on the surface of potassium metal. Photoelectrons are ejected from the metal's surface. What is the maximum speed of the ejected photoelectrons? The work function of potassium metal is 2.30 eV. 7.15E5 m/s 9.51E6 m/s 6.32E5 m/s 8.99E5 m/s 1.54E6 m/s
Light with a wavelength of 137 nm is shined on the surface of potassium metal. Photoelectrons are ejected from the metal's surface. What is the maximum speed of the ejected photoelectrons? The work function of potassium metal is 2.30 eV. O 7.15E5 m/s 9.51E6 m/s 6.32E5 m/s 8.99E5 m/s O 1.54E6 m/s When Dr. Bruce Banner becomes angry and undergoes a transformation into the Incredible Hulk, his blood plasma becomes saturated with Na-24 atoms. These radioactive sodium atoms decay into...
Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV. 7.15E5 m/s 6.32E5 m/s 4.35E4 m/s 8.83E5 m/s O m/s. No photoelectrons are ejected.
Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV. 7.15E5 m/s 6.32E5 m/s 4.35E4 m/s 8.83E5 m/s O m/s. No photoelectrons are ejected.
Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV. 7.15E5 m/s 6.32E5 m/s 4.35E4 m/s 8.83E5 m/s O m/s. No photoelectrons are ejected.
Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV. o 7.15E5 m/s O 6.32E5 m/s O 4.35E4 m/s O 8.83E5 m/s m/s. No photoelectrons are ejected.