Work Function from a Graph
Difficulty: Easy · Topics: Photoelectric Effect, Work Function
Grafikdan chiqish ishi
The maximum kinetic energy E km of photoelectrons is plotted against frequency as shown. What is the work function of the metal? (h = 4.0×10^-15 eV·s)
physics "view":[-1.9,-1.35,6.4,3.1],"alt":"Maximum kinetic energy of photoelectrons against frequency: zero at 4 × 10¹⁴ Hz, rising in a straight line.","items":["type":"plot","at":[0,-1.0],"size":[5.6,3.6],"x":[0,8.4],"y":[-1.2,2.2],"xTicks":[1,2,3,4,5,6,7,8],"yTicks":[-1,1,2],"grid":true,"gridX":[0,1,2,3,4,5,6,7,8],"gridY":[-1,0,1,2],"xLabel":"f (×10^14 Hz)","yLabel":"E km (eV)","yLabelMode":"side","yLabelGap":30,"items":["type":"polyline","points":[[4,0],[8.2,1.68]],"width":2.2,"colour":" D946EF"]]
Fotoelektronlarning eng katta kinetik energiyasi E km ning chastotaga bog‘liqligi rasmda ko‘rsatilgan. Metallning chiqish ishi nimaga teng? (h = 4.0×10^-15 eV·s)
physics "view":[-1.9,-1.35,6.4,3.1],"alt":"Maximum kinetic energy of photoelectrons against frequency: zero at 4 × 10¹⁴ Hz, rising in a straight line.","items":["type":"plot","at":[0,-1.0],"size":[5.6,3.6],"x":[0,8.4],"y":[-1.2,2.2],"xTicks":[1,2,3,4,5,6,7,8],"yTicks":[-1,1,2],"grid":true,"gridX":[0,1,2,3,4,5,6,7,8],"gridY":[-1,0,1,2],"xLabel":"f (×10^14 Hz)","yLabel":"E km (eV)","yLabelMode":"side","yLabelGap":30,"items":["type":"polyline","points":[[4,0],[8.2,1.68]],"width":2.2,"colour":" D946EF"]]