REAL IMAGE - EVALUATION OF DATA 1. Q7. Sketch 1. Sketch your light track set up showing the light source object at the 10cm location, the 10cm lens at the 25cm location and the screen at the 55cm mark, and label the object distances s and image distance s'. 2. Q8. Make two tables of the collected data (10cm lens, 20cm lens) showing the object distance S and the image distance s'. 3. Q9. Plot these two tables using Excel. The object distance, s, is on the x-axis, and image distance, s', is on the y-axis. What relationship appears to exist between these variables? Do a polynomial curve fit to the plot and record the equation provided. 4. Q10. Redo the two tables such that the entries are now 1/s and 1/s'. 5. Q11. Now plot these two new tables with 1/s being on the x-axis. Request a linear fit equation from Excel. Examine the value and units of the vertical y- intercept. What is the physical significance of this y-intercept. 6. Q12. What are the slopes of the two plots. Why are they approximately the same. 7. Q13.Compare the two equations from Excel to the appropriate formula from your text. Do they agree. If they are not very close, then there is an error in the experiment. Determine the error if any. 8. Q14. Suppose you had used a 15 cm double convex lens in your experiment. What would be the slope and the y-intercept for the graph of 1/s' vs. 1/s. Hint: write out the formula