Physics Lab 4

Document Content and Description Below

Physics Lab 4 Question 1 The missing lines most likely correspond to areas close to the peaks of the graphs. The missing line for λ=443.755nm is found at approximately 15.35o from m=0 (when x=17.5... o). This suggests that the line can be identified by the peak of the second unknown helium line, meaning that the apparatus did not produce the highest quality of results. The apparatus lacked the sensitivity required to distinguish similar wavelengths, and instead presented both as a combined peak. In addition, the second missing like for λ=471.314nm is located at approximately 16.33o from m=0 (when x=19o), shown by the peak of the third helium line on the graph. This also suggests that the peaks were combined due to the shortcomings of the apparatus in separating the similar wavelengths. The third and fourth missing lines (at λ=492.193nm and λ=501.567nm) are seen at roughly 17.00o and 17.40o from m=0 (when x=18o). This can be identified by the small peaks between and 2nd and 3rd unknown lines. Finally, the fifth missing line at λ=587.562nm would be located at 20.52o (when x=22o). This can be identified at the beginning of the peak after the 3rd unknown line. Question 2 The missing lines most likely correspond to areas close to the peaks of the graphs. The first four missing lines can be found around 13.23o, 13.42o, 13.70o, and 14.16o away from m=0 (when x=15o) at wavelengths of 383.538nm, 388.905nm, 397.007nm, and 410.174nm, respectively. On the graph, these lines are shown as small bumps between the m=0 line and the 1st hydrogen line. It is reasonable to predict that if the graph were enlarged, larger peaks would be detected that correspond to the missing lines. The last missing line at λ=656.285nm is found close to 23.05o (when x=25o), which can be seen near the beginning of the 3rd hydrogen line peak. This suggests that the wavelengths were very close in magnitude, causing the graph to combine their peaks. Question 3 I believe mercury is the element that produced the mystery substance spectrum. Question 4 [Show More]

Last updated: 1 year ago

Preview 1 out of 3 pages