Question
1 of 4 1 next Problem 35.39 Part C liow tar trom the line ol c ontact wil the: vicist green, and orange light again be enhanced in the retected ight? Two nat plates o gass with par 11 taces are on table, one plae on the other Each plate is 10 5 cm long and has a retractive index of 1.55 A very thin sheet of metal foil is inserted under the end of the uppet plale to rase it slighty at that end, in a manner similar to that pictured in the fgure (Eique 1) When you view the glass plates from above with refected while light, you observe that, at t 19 mm from the line where the sheets are in contact e vokt 1ght of waveergth 39 nm is enhanced in this rolected sghl but no visble lght is enhanced closer to the ine ot contact Submit My Answers Give Up Part D Zgpoet, 2 Part E Submit My Answers She UP Part F How thick is the telal Soi holding the ends of he planes a3rt? fnet
Explanation / Answer
c) tan x 1.19 x 10-3 = 497 x 10-9 /2
tan = 2.088 x 10-4
2.088 x 10-4 x X = 3x 397 x 10-9 /2
x = 2.85 mm
d)
2.088 x 10-4 x X = 3 X 554 X 10-9 /2
x = 3.98 mm
e)
2.088 x 10-4 x X = 3 X 680 X 10-9/2
x = 4.88 mm
f) For violet
1.55/.5 = 105/(m + .5)
m = 33.37
Then apply 2nt = (m + .5)(wavelength)
2(1)(t) = (33.87)(397X 10-9)
t = 6.723 X 10-6 m which is 6.723 um
