Question

In Young's double slit experiment, if $d$, $D$ and $\lambda$ represent, the distance between the slits, the distance of the screen from the slits and wavelength of light used respectively, then the band width is inversely proportional to

• A. $\lambda$
• B. $d$
• C. $D$
• D. $\lambda^2$
• E. $D^2$

Answer 1

Answer: (B)

The band width is inversely proportional to the distance between the slits $d$ as $\beta = \frac{\lambda D}{d} , \beta \propto \frac{1}{d}$