B
Newtons Ring detup
EXPT. NO. Neuton's Rogp Dato:
PAGE N0.
lo detemine the adius uuatwte o 4he plano- (onvex len
Aeva u edium Vapousi lamp, travelig micvo scope,Condensing leni abut scm foa
length.+a thin plano - Conyex lens,a stand and n
cpcal al plane
ncident nÓimally n the len, Sustem at Ba Shouon n g-sy
dision aplitude at he Dofnt(and D too Independbnt Ihe
Path clfeHence letuoRen he Ray
l- 2 |t co TT
The reflectie at the poat Dtaka place in
in. the denaes medium(glas)
th he change s phase TT (e) a path dtdil Mence d/2 The point DCotuspon
The point DCôrreApond o doank ns if 2t t dl2 (2n4) dl2 ’
Coniden a Cincle c Yadiu
mdi C):T the tt all the ieys ancident on the
C'ncumtenene o thid Cinde, the path d<exence ss same. tlence the Cincumeen
-(e
the Cincle appeans ligit
CE . EC= DE. ED
CE 0¬ (o0'-DE)
) Tt' 2 Rt -t
inte, t Small tl (anle nelealed i- 2t ='R
the vale
hbs tuing the vale 2t
2t in eyin D20,
Teacher's Signature:
Side Dia net en(y- Y} en
St No o Rings Heroxopo lejt dide Mtosepe d-(I-9)
ND
(X in Cm) (Y in Cm)
20 4908 O-641
2 18 0-607
S S34 4927 O363
I6 S.S12 4.45| O314
SSo2 4968 :S34
S 12 Q.487
5481 4 494
O43
0234
S.026
O.417
S048
S.06 O-276
C06
lo 2 S 326 S12 O-206 0-042
Calouation
S893 X10
) m: 12 in6
R: (0237 - 0-120)x1O
4xS893xjo"x(12-6) 41432
J
2) m= 18,n8 80-6Cm
R O348 - o193 x1Ñ O.19S 0-22 m
23S72
82Cm
Date
EXPT. N0.
PAGE NO.
he Condihion f81ten lricht hinas beteoes.
T'|2R - (2n1) 2Al 3
j don dn te paent the clia metu o duccesive m
then.
2
2
2
mA dn
4R
Salt hacting both equations =) d'-dn'm-n)
4R
clo-dh2 Cm
Prcedune
fnst clean the Sutace o both qlas plate a the plono- (onvex lens mccthnly
sÜth sofECloth.
2AACres wire is titecd in eye piecet
Ho ceunt
Coun aa take the Headngs the
sings
lens
3 he plano Convexlena. s pat in ith place wth caovcd dueitace in Contact
with the plate The qlas plate G Shuukd be adjusted 4s' micIo Xope s
Sahtly ad juted fuch that the inges cleaerdy seen ia the teld vieo,
'he sings olutoined ohe nat cinculan
(é1) (oth oie not Cleaved poperly on lens
hen eithen the qlan plate
b not proply placed Dn
On deny
glas
plate
4 By moving he micro Kope hbuzontaly n venticay such hat the (xoH Oive
made to pas htough he Cenre e< Tönqs:
S Note the least lount o the icvosope.
Teacher's Signalure: .
By dphenometey:
Radius of Ctonvnloe 6h 2
no
otation
lent (a) plane (6) 0. 033
|4 16 *D00I
33
O-033 80-924
GxO033 2
Dmt- Dn' slope 80.604 Cm
hrom Graph dy
dx m-n
4xse93AI0
Eti By Spheromete:
(00-80.824
Yeri = (4-196 7.
- By Neuwtors rings
000 - 8 2
Yerrt = l00
18 Y.
fom (roph |00- 8O 604
Y. errti =
Date.
EXPT. NO.
PAGE MO.
A Now MOVe the micro Scope oe one 6de (leyt 4oom One (ental dcuk
move towaMs riqht fls the vettical oire cf aye fece becomes jut -angatial
the
$ 20 dak ting take the iteacliny míro scope oih -he
help o man Scale Venniek cale. 'he moticn c mcroscoçe -touwaxds lçht
Mouly a iectd the ieacing < the Venien Scale evey fme he
al tesnate dak (20
-ngofiad the cdge evey
Ch neacling he Ceul val Spot, move the Cro oire otther to the othe fide
f it i heced he 1eadinQA ch Vewieh sale and min Scale
& fane the dteene Getucon the eacdings a! he too Sides Comespending
Qne Sungit qives clametes.
in the tale
4lso note Ahe Squase the dameten of eoach ing
Belauttons
he lens and the glas Shadd be dut tee,othehuclse (entaal spot wil nst
2Tne fnelinalion c ys°s° plale shoud le adjusted l the hing
e
3 Rlack -lot ehuti c the Scew Shadc le avoided ky moving he microALope
in cne diecon uonc leyt do i_at do deft
Re slti (onvex lens
Padius lunvate a plano
Teacher's Signature:
Date:
EXPT. NO.
PAGE N0.
Standad Vae
Cort 18 .
19.176.
9396 .
Teacher's Signaturc:
