p-/o'/+ - /q= l+ /r
clnl€: Physics 1l Spriq 2007
c:
r
/,
x*n" 4n O
a) a planemirror @ a concavemirror c) a coovexmrror d) not enoughinformationgiven
trl
l^;?"'* ^4 ) n-^,+p
e^Jn") "+"4J
=> ,.uq.d /:,"1\4/d/\A.t\ivr'1A VAJ"
^
)i\'r.6*
!++49*
t
"-"!-"*+A
Problem 2 (4 points) An objectis placed30 cm in fiont ofa convex miro! with a radiusof curvafirrcof 80 cm. (s) Whereis the imagelocated?O) Is the imageupright or inverted?(c) Ifthe object is 10 cm
tall, howtall is theimage?
/ p -/o '/+- /q = l + /r
=-9Dcr')
t'-/^lt p : 3oc.n a .?
o
t/ /1
- -)= -)-tlD.o 3o..r
m = - % --C!:a) ---r 30 c r.)
(.)
h ' = m \ = ( o "5l)
----)
r.r" O.S?
%
=- l ? . ^
-a,v"-tr
Ft )O,
M^aqa
(
Problem3 (4 points) A magicianwishesto createthe illusion ofa 2.54 m tall elephant,He plansto do this by forming
a virtualimageofa 50.0cmtall modelelephant with thehelpofa sphericalminor.(a) Should themiror be concaye or convex?(b) If themodelmustb€placed3.00m frornthemirrocwhat (c) How far fromtheminor will theimagebe formed? radiusofcurvatureis needed?
( u ) l m l = f ' s ' 1 ' n= E . o b
m >o ^r,$&J.4.'./
.r ''-.,7A) (,*;h*n
O, EO rr)
$ = -n/n ____,' b - - r \ p = - ( s . o e ) ( r . o o ^ )= - / 5 . 1 r . ,
'4= /?" / f
t/
'/ ( T
{_ l
-
--)
1./fn
t/, ,.|
=
+ l l - /5 ')' tt 3,oo n
= R/, -t
//)'
A= J,5 rt'l
)
t4
c:
r
/,
x*n" 4n O
a) a planemirror @ a concavemirror c) a coovexmrror d) not enoughinformationgiven
trl
l^;?"'* ^4 ) n-^,+p
e^Jn") "+"4J
=> ,.uq.d /:,"1\4/d/\A.t\ivr'1A VAJ"
^
)i\'r.6*
!++49*
t
"-"!-"*+A
Problem 2 (4 points) An objectis placed30 cm in fiont ofa convex miro! with a radiusof curvafirrcof 80 cm. (s) Whereis the imagelocated?O) Is the imageupright or inverted?(c) Ifthe object is 10 cm
tall, howtall is theimage?
/ p -/o '/+- /q = l + /r
=-9Dcr')
t'-/^lt p : 3oc.n a .?
o
t/ /1
- -)= -)-tlD.o 3o..r
m = - % --C!:a) ---r 30 c r.)
(.)
h ' = m \ = ( o "5l)
----)
r.r" O.S?
%
=- l ? . ^
-a,v"-tr
Ft )O,
M^aqa
(
Problem3 (4 points) A magicianwishesto createthe illusion ofa 2.54 m tall elephant,He plansto do this by forming
a virtualimageofa 50.0cmtall modelelephant with thehelpofa sphericalminor.(a) Should themiror be concaye or convex?(b) If themodelmustb€placed3.00m frornthemirrocwhat (c) How far fromtheminor will theimagebe formed? radiusofcurvatureis needed?
( u ) l m l = f ' s ' 1 ' n= E . o b
m >o ^r,$&J.4.'./
.r ''-.,7A) (,*;h*n
O, EO rr)
$ = -n/n ____,' b - - r \ p = - ( s . o e ) ( r . o o ^ )= - / 5 . 1 r . ,
'4= /?" / f
t/
'/ ( T
{_ l
-
--)
1./fn
t/, ,.|
=
+ l l - /5 ')' tt 3,oo n
= R/, -t
//)'
A= J,5 rt'l
)
t4
