Optics Question 1084
Question: In Young’s experiment, light of wavelength 4000 Å is used to produce bright fringes of width 0.6 mm, at a distance of 2 meters. If the whole apparatus is dipped in a liquid of refractive index 1.5, then fringe width will be
[MP PMT 1994]
Options:
A) 0.2 mm
B) 0.3 mm
C) 0.4 mm
D) 1.2 mm
Show Answer
Answer:
Correct Answer: C
Solution:
$ {\beta _{medium}}=\frac{{\beta _{air}}}{\mu }=\frac{0.6}{1.5}=0.4\ mm $ .
