Question: Can you help me with this assignment? Method: Go tohttp://physics.bu.edu/~duffy/HTML5/Lenses.html Set the object height to 40 cm.. Choose a value at random for the magnitude

Can you help me with this assignment?

Method:

  1. Go tohttp://physics.bu.edu/~duffy/HTML5/Lenses.html
  2. Set the object height to 40 cm..
  3. Choose a value at random for the magnitude of focal length.
  4. For values of do > f, record do and the corresponding value of di.
  5. Obtain up to ten (10) sets of object and image distances.
  6. Record in a table as below.

Results Table

do (cm) di(cm) 1/ do(cm-1) 1/ di(cm-1)

  1. Plot a graph of 1/di against 1/do
  2. Include the trendline in your plot
  3. Show the equation of the line
  4. Hence determine the focal length of the lens.
  5. In your discussion incorporate the answers to the following questions

Q1) Rearrange the terms of the thin lens equation in the form that allows you to compare it with the graph that was drawn.

Q2) From your form of the equation in Question (1), determine the expected value of the gradient of your graph.

Q3) Show that both the x and y intercepts yield values of the focal lengths.

Q4) Briefly explain why focusing on a very distant object would yield an approximate focal length of the lens.

Q5) Compare the expected and measured values of gradient of the graph

  1. Write your conclusion.

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