question_answer

In Youngs double slit experiment, slits are separated by 2 mm and the screen is placed at a distance of 1.2 m from the slits. Light consisting of two wavelengths \[\text{6500}\overset{\text{o}}{\mathop{\text{A}}}\,\] and \[\text{5200}\overset{\text{o}}{\mathop{\text{A}}}\,\] are used to obtain interference fringes. The separation between the fourth bright fringes of two different patterns produced by the two wavelengths is ___ mm.

Answer:

0.312