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Author Question: A piece of glass has a thin film of gasoline floating on it. A beam of light is shining ... (Read 66 times)

mrsjacobs44

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on: Jul 29, 2018
A piece of glass has a thin film of gasoline floating on it. A beam of light is shining perpendicular on the film.
 
  If the wavelength of light incident on the film is 560 nm and the indices of refraction of gasoline and glass are 1.40 and 1.50, respectively, what is the minimum nonzero thickness of the film to see a bright reflection?
  A) 500 nm
  B) 400 nm
  C) 300 nm
  D) 200 nm
  E) 100 nm

Question 2

If the sunlight from a star peaks at a wavelength of 0.55 m, what temperature does this imply for the surface of that star? The constant in Wien's law is 0.00290 m  K.
 
  A) 9500 K
  B) 5300 K
  C) 2500 K
  D) 25,000 K
  E) 15,000 K
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mcomstock09

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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mrsjacobs44

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

nanny

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Reply 3 on: Yesterday
Wow, this really help

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