Follow the link to answer the following questions: https://phet.colorado.edu/sim
ID: 2075962 • Letter: F
Question
Follow the link to answer the following questions: https://phet.colorado.edu/sims/photoelectric/photoelectric_en.jnlpThe following shows work functions for different metals:
Sodium (2.28 eV) , zinc (4.3 eV), copper (4.7 eV), Platinum (6.35 eV), and Calcium (2.9 eV)
1. Now set up the experiment so that the plate is ejecting electrons. Create a hypothesis on how to increase the maximum initial kinetic energy of the ejected electrons. a. Which metal would you choose? b. What changes do you need to make to the experiment? c. When you are ready, test your hypothesis. d. Do your results support your prediction? Why or why not? 2. Next, set up your experiment so that the light intensity is non-zero but the plate is NOT ejecting electrons. Predict which parameters you need to change to make the plate start ejecting electrons. Implement those changes and test your prediction. Briefly describe what you observe. Do your results support your prediction? Why or why not?
Follow the link to answer the following questions: https://phet.colorado.edu/sims/photoelectric/photoelectric_en.jnlp
The following shows work functions for different metals:
Sodium (2.28 eV) , zinc (4.3 eV), copper (4.7 eV), Platinum (6.35 eV), and Calcium (2.9 eV)
1. Now set up the experiment so that the plate is ejecting electrons. Create a hypothesis on how to increase the maximum initial kinetic energy of the ejected electrons. a. Which metal would you choose? b. What changes do you need to make to the experiment? c. When you are ready, test your hypothesis. d. Do your results support your prediction? Why or why not? 2. Next, set up your experiment so that the light intensity is non-zero but the plate is NOT ejecting electrons. Predict which parameters you need to change to make the plate start ejecting electrons. Implement those changes and test your prediction. Briefly describe what you observe. Do your results support your prediction? Why or why not?
https://phet.colorado.edu/sims/photoelectric/photoelectric_en.jnlp
The following shows work functions for different metals:
Sodium (2.28 eV) , zinc (4.3 eV), copper (4.7 eV), Platinum (6.35 eV), and Calcium (2.9 eV)
1. Now set up the experiment so that the plate is ejecting electrons. Create a hypothesis on how to increase the maximum initial kinetic energy of the ejected electrons. a. Which metal would you choose? b. What changes do you need to make to the experiment? c. When you are ready, test your hypothesis. d. Do your results support your prediction? Why or why not? 2. Next, set up your experiment so that the light intensity is non-zero but the plate is NOT ejecting electrons. Predict which parameters you need to change to make the plate start ejecting electrons. Implement those changes and test your prediction. Briefly describe what you observe. Do your results support your prediction? Why or why not? 1. Now set up the experiment so that the plate is ejecting electrons. Create a hypothesis on how to increase the maximum initial kinetic energy of the ejected electrons. a. Which metal would you choose? b. What changes do you need to make to the experiment? c. When you are ready, test your hypothesis. d. Do your results support your prediction? Why or why not? 2. Next, set up your experiment so that the light intensity is non-zero but the plate is NOT ejecting electrons. Predict which parameters you need to change to make the plate start ejecting electrons. Implement those changes and test your prediction. Briefly describe what you observe. Do your results support your prediction? Why or why not?
Explanation / Answer
1.
a) Sodium metal since it has minimum work function that provide maximum kinetic energy
b) Will replace sodium metal with another metal that has even less work function and Decresing wavelength of the light beam incident to get maximum possible KE
d) Yes it support the hypothesis
we used metal with different work function and observed that the metal having minimum work function gives us maximum KE
2.
If we observe the light intensity is non-zero but the plate is NOT ejecting electrons
In this case first try to increase the wave lenth of the incident light.
If it doesn't work change the plate with metal having least work function
After making these changes now the experiment should work.
Use different plates having different work function and observe the maximum KE and it is suporting our prediction.