Cuesta College, San Luis Obispo, CA
Light in air with an incident angle of 19.0° is transmitted into acetone at an angle of 13.9°. Light in air with an incident angle of 44.0° is transmitted into turpentine at an angle of 28.2°. Show that the index of refraction of acetone is less than the index of turpentine. Explain your reasoning using the properties of light and refraction. Solution and grading rubric:
- p:
Correct. Uses Snell's law to solve for and compare the numerical values for the indices of refraction of acetone versus turpentine. - r:
As (p), but argument indirectly, weakly, or only by definition supports the statement to be proven, or has minor inconsistencies or loopholes. - t:
Nearly correct, but argument has conceptual errors, or is incomplete. - v:
Limited relevant discussion of supporting evidence of at least some merit, but in an inconsistent or unclear manner. Some garbled attempt at applying Snell's law, angles, and/or indices of refraction. - x:
Implementation/application of ideas, but credit given for effort rather than merit. No clear attempt at applying Snell's law, angles, and/or indices of refraction. - y:
Irrelevant discussion/effectively blank. - z:
Blank.
Sections 30882, 30883
Exam code: midterm01Ft6G
p: 41 students
r: 0 students
t: 0 students
v: 1 students
x: 0 students
y: 0 students
z: 0 students
A sample "p" response (from student 1348):
No comments:
Post a Comment