Q. The Young’s double slit experiment is performed with blue and with green light of wavelength 4360 $\mathring{\mathrm{A}}$ and 5460 $\mathring{\mathrm{A}}$ respectively. If $x$ is the distance of 4$^{th}$ maxima from the central one, then
A) $x(blue) = x(green)$
B) $x(blue) > x(green)$
C) $x(blue) < x(green)$
D) $x(blue)/x(green) = \ $5400/4360
Explanation
(c) Distance of $n^{th}$maxima, $x = n\lambda\frac{D}{d} \propto \lambda\ $
As $\lambda_{b} < \lambda_{g}$
$\therefore\ \ x_{blue} < x_{green}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.