$(a)\;300\;nm \\ (b)\;600\;nm \\ (c)\;both \;a\; and\; b \\ (d)\;None $

Want to ask us a question? Click here

Browse Questions

Ad |

0 votes

0 votes

$\Delta P= \large\frac{yd}{D}$

$\qquad= 900 nm$

for minima $\Delta P = \large\frac{(2n-1) \lambda}{2}$

=> $\lambda =\large\frac{2 \Delta P}{(2n-1)}=\frac{1800}{2n-1}$

$\qquad=\large\frac{1800}{1} , \frac{1800}{3}, \frac{1800}{5}, \frac{1800}{7}$

of these $600,360\;nm$ lie in visible region.

Hence these will be missing lines in the visible spectrum.

Hence c is the correct answer.

Ask Question

Take Test

x

JEE MAIN, CBSE, NEET Mobile and Tablet App

The ultimate mobile app to help you crack your examinations

...