1ok...
10DdλÏ
= (2*6-1)Ddλ2
Ï
= 1.818
Young's double slit experiment is performed in a liquid. The 10th bright fringe in liquid lies where 6th dark fringe lies in air. The refractive Index of the liquid is approximately,
A) 1.2 B) 1.6 C) 1.5 D) 1.8
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8 Answers
1SRY can't confirm.
Please post ur working. I don't remember frm which book i posted the question [2][2]
1when an ydse apparatus is dipped in a liquid of refractive index n
,the wavelength changes and becomes
λ' = λn
hence
fringe width in a liquid
β' = λ'Dd = λDnd = βn
so
n = ββ'
n= 10 /6
1@ meetuinmay....the question doesnt speak of FRINGE WIDTH...
1jsgenius you are right the answer is 1.8 ..i am getting the same thing