Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class12  >>  Wave Optics
0 votes

In a Young's double slit experiment set up the 10th maxima is 3 cm from the central maxima . If the whole set up is immersed in a liquid of refractive index $\mu=1.5$ What will be the new fring width

(a) will be same

(b)will be 2 mm

(c)will be 4 mm  

(d)will be 1mm 

Can you answer this question?

1 Answer

0 votes
Since $10th$ maxima is 3 cm from from central maxima the fringe width $\beta =\large\frac{3}{10}$
$\qquad= 0.3 cm$
$\qquad= 3 mm$
Now when YDSE is immersed in a liquid of refractive index $\mu $ new fring width $\beta'=\large\frac{\beta}{\mu}$
$\qquad= \large\frac{0.3}{1.5} $$=0.2 \;cm$
$\qquad= 2 \;mm$
Hence b is the correct answer
answered Jan 21, 2014 by meena.p

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App