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Exam-1-L10-58655-soln

# Exam-1-L10-58655-soln - r r'J rtl7l \$->.r,\$ I An A B C D E...

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f,.~. '. r ... ,' "'",.:::., ...... " - r"'J.;·' .- .,., ..- ..- I. An object is 10 cm in front of a conc~ve mirror of radius 40 cm. Its image is: A) real and 20 cm in front of the mirror ~ +- ~ _ 3: B) real and 30 cm in front of the mirror S;; ~\. - lZ C) virtual and 30 cm in front of the mirror _' .:L. \ D) real and 30 m behind the mirror S·\ - R ~ .S" - 'fo - c"" -- joe , ........ -> E) virtual and 20 cm behind the mirror - I rtl7l A (ltf;VCAl/tr IM\$;ltl( I tvC0ATIVlf s' -::- r-:l 0 r "1' ,--,/1' T TJ/J1A67 C Tx;rs''7I1,J L-e.- _7.n~.? L ~b / n /7 S 0 ..s' \.:: -:l 0 c. vYJ \'07 rcA AL ,/~j) J?t!JJ..TtJP rile;: \$' .r ,\$ V/T\ tJ1 f f( Il of{, . 2. A ray of light passes through three media as shown. The indices of refraction in these media obey which of these inequality conditions: 3 ~ , .. ~ ~ /v'- - c 11>-',,- YI . () I s,~rJ ~ ~ VI /-,5:,. '''-1~).. J.e rc . fof2. 0 <& ( 10) :5 -;t:r/ ~ y:. j' 7ft 0 ?CJ£T.7AP/II,4-L 'Iv -e-) s C> 11 \ -&\ 0( VI:J.--&J..- --;> A) n/ > n2 > n3 WJl;:::~JI /l1tfAj1J.'J /ff/Ji SrnAl--L CIC ,AtJb; l-J£J (·cJ(l.fL~S ?drJ» B) n3 > n2 > n/ 10 l;J126;trll. JJ i/.4LL-<er;) rHU.S {'df?1P,-1t2~P'l /'t/C C) n3> n/ > n2 D) n2 > nJ > n3 j;t/6;t[..S I./JJ//f J?e:s ?~( TorI-! 1.:- }fa/lI 'l;o;V'rA L E) n/ > n3 > n2 ifl:-;~f<E:. tJC 5r~ rll;J-l ~<-B-'J-<~'i' J • :-=-> ..s ~-e-:1 ..... < !\$J.--tJ -0-;1 .... <. S:r:rJ ~ S 0 //1.. > t1J- '7 YJ 3 . 3. A diamond with index of refraction 2.66 is placed in water, which has index of refraction 1.33. Light rays will be trapped within the diamond when their angle of incidence on the diamond's surface is: .-:':> \ .J- S,,,, /"\ -tT c Page 2

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4. Two particles with charges Q and -Q are fixed at the vertices of an equilateral triangle with sides of length a. If k = 1/4rr (0, the work required to move a particle with a charge q from the other vertex to the center of the line joining the fixed charges is: LA... =- k '1- t- r L-\_ :: -~t , a r YDM+ c;:..\"":)f"U JL ~ ,,":> J', s t") v~c.-'1 .... r +-IO/V' a +0- ----e -0 -1 <t E - q S <> ~ -tvTdl 'P <> + --e/V~ -t-', (\\ v\.. =- LA. + L-\. _ \ l::- "4----- +- l - ':"'1-) ==--- 0 A) -2kQ~/a *- - -, r B) kQqla S 0 ---t\;~ ~(ro v0 ~ ~ dC:2 u.J:Y'j __ -<,. ""&v\... C) kQqla .il ~ __ LA"\ ~D-\-~\+l'd\ I rl/\..Q. Cvl I "'j -+"'-~+ yV1.6v''{v~..-:* a\cJV'-j +l.1.+------ D) 2kQqla \~ \.Q~ v\.-' c----(...S no i..>-Jurlc. ( ((.--e.c.?tl W:=. I- ' ~ = -Au ..... ) --) E) 0 /-+ e.
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