BdPhO Regional (Dhaka-South) Higher Secondary 2019/1
Posted: Fri Apr 26, 2019 4:35 pm
approximately how many bright interference bands are visible on the screen?
A coherent beam of monochromatic light of wavelength $500$ $nm$ is directed towards two thin slits separated by a distance of $1$ $mm$. If the screen covers an angular region of $60˚$, as shown in the figure,