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(c) Determine the
Cauchy constants A and B
in the long waverength region;
Cauchy relation, nnOihe Oi.p"..ion
from the
oithe prism at 656.3 nm._
iilii, i",."*,"e
U**r
.A
;; ;; ".;r*1i;'I{},ff "ril: J: JT,ffiff ;ffi l*l _;;
D
d;; i ; h"',", n, .o"t..*i,"
il:TI:X Jl""r'ffi:l':fff
lffi#ff#;1?T#
-s
6
tne prism
the hydrogen
prism or 60. rerrac tin g
rin"e,
Lfi I*,
6-10. The refractive indices for
certain crown and flint
Crown: nc : 1.527. n1l : 1.530,
:
Flint:
nc
nr
: I.630.
tlp
- I.oJJ. nr :
3
r,
glasses are
1.536
1.648
The two glasses-are to be combined
in a double prism that is a direct
the D wavelength' The t"rtu"urf
vision prism for
uffi.
or trre niriipris-'t il.'o"r"rmine
angle of the crown prism
the required
*o tr,E r..iiurs
o",r""n
the
c and the F
that rhe prisms
"pr."
are
I'.;o#*-"
tr,i,
una
6-11' An achromatic thin prism
for the c ayd
crown and flint grasses described
i, r"or"^o|
ff:ffi,TffH fl :ff;1LX'.t
6-12. A perfectly
1n""riirp"rri*
.or&,ior" oi
-rni,,u-
deviation is
lines is to be made using
the
i_FrguHhofer
,1i" .;d;;il:
prism has
prism
a
an_
prism angre r".,r," iri,ieass
and (b) the resurt-
diffuse, or Lambertian, surface
has the form of a square,
This object radiates u'otur po*".
5 cm on a side.
w
irr"
iir"-i".*r".aii""tion. that consriture
half the toral solid angle of ir
.
wrttr a +-cm rocrtiengttr lens
down to //8 is
and stopped
to"pho,.grupr,'# .u.;:cl wher
it is praced r m rrom
.used
"iii
ir"*:.,
o'
flTiJlI,the
radiant
.^i"[..'rriiant
rhe rens.
inrensitv. ano rauiance of
the object. (See
(b) Determine the radiant
flux delivered to the fllm.
(c) Determine the irradian.;;,
il';il.
6-13' Investigate the behavior
of Eq. t6-32r. giving.the dependence
of rhe depth of field on
iilll
;".T
ii : fl ::.i:::ll:l
:;1H ffi H*#;
6-14' A camera is used to photograph
I
,ri". .o*,
:,
;';r,'lu,, u, r. ..
;;il;
of students at a distance 6
m away, focusins
fi,ji.",flfl3t;::;.ti1ffX"";*:'l*-e
derocusing
o. L"i,, .i."r"s oue to ouleci
:n:i;:;;'*L:itit:tj;rrifli',,1J;H#:'liH;lmilirinu;i#
tu-era has a focal
stopped down
to anf/4
length of so
setting?
--
i.
"ra
6-15' A telephoto lens consists
of a combination of two thin
-r20 cm and
lenses having focar lengths
of
-8 cm, respectiv;t:Til;r."s are
o'
separated by
a distance of 15 cm.
."*r*"ii"r, oir,.# iloi'n"ru,*.
"iir,"
rens to flrm
ff:'"',1ff ihe
of a.distant object subtend;;;;
(b) Determin" ,i'::*t::
;;;'" r 2" at thecamera.
position or tt' p'iffit
ptune.,
ing the ,,,,# ;of;:Jf:?'H"iTJi:
;"i, ;.",
rocal
6-16. A 5-cm focal
"-fr
6-77
r.re,t
lenr
i$iln* jji#f; ft j[,:;fi :,#i"xt,H.,T,,lfH["ilTsyil:lffi
' The subtends an
;,f
sun
j
Tj:
lngle of 0.5Jat the earth's surface, where the illuminance is
about
sun formed by
;:,ffiT1ji.?i":tr
; *l**,:x,.
";'Jffi#:i,he
camera uses a convex"x,ff
lens of focal lTglh.ls
cm. How large an image is
on the film of a 6_ft_rall p".ro,
formed
(b) Ttre convex lens is replac'e;;, tbO fi u*uy.l
conibination consisting of
length convex lens and u .or.uu.
a r2_cm focal
r"rir.'rr,.
.#ted in the position
ofthe original^rers, and rrr..orr.^
i.rs is s cm in rr"ri
focar rength of rhe concav.
is the required
6-18' (a) A
"iilrir*
br; ;il;at
Chap.
6
problems
"on;" il ;
distanr
"rii.'ivro
"b*r.";;;;;"cused
images on
147