Midterm2Solution

Midterm2Solution - PHYSICS 9B MIDTERM 2 December 18, 2010 I...

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PHYSICS 9B MIDTERM 2 December 18, 2010 I certify by my signature below that I will abide by the UC Davis Code of Academic Conduct. This includes not copying from anyone else’s exam not letting any other student copy from my exam not discussing this exam with any student who has not yet taken it, nor providing any information, written or oral, that might get to a student who has not yet taken it. Anyone suspected of cheating will be automatically reported to Student Judicial Affairs. LAST NAME: FIRST NAME: STUDENT ID: (P R I N T) (P R I N T) (LAST 4 DIGITS) Signature: Problem 1. (2 points) Light passes from medium X to medium Y and further to medium Z as shown. What can you say about refractive indexes of the media? A . n X <n Y <n Z . B . n X <n Z <n Y . C . n Y <n X <n Z . D . n Y <n Z <n X . E . n Z <n X <n Y . F . n Z <n Y <n Z . Solution. according to the law of reflection sin θ X /sin Y =n Y /n X Since X > Y it follows than n X <n Y , Similarly Y < Z . therefore n Y >n Z We can also conclude that since X > Z it follows than n X <n Z n X <n Z <n Y . Answer B . X Y Z
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Problem 2 (2 points) Consider three convergent lenses, each has a focal distance equal to f, which are placed at distance f from each other. The object is located as shown. The image is A erect, located to the left of the first lens. B. erect, located between first and second lenses. C. erect, located between second and third lenses. D. erect, located to the right of the third lens. E inverted, located to the left of the first lens. F. inverted, located between first and second lenses. G. inverted, located between second and third lenses.
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Midterm2Solution - PHYSICS 9B MIDTERM 2 December 18, 2010 I...

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