Physics

Problem

In a double-slit experiment using light of wavelength

500\,\text{nm}

, the slits are

0.25\,\text{mm}

apart and the screen is

1.0\,\text{m}

away. A bright fringe is observed at a point

6.0\,\text{mm}

from the central maximum. Identify the order

n

of this bright fringe. a) 4 b) 3 c) 5 d) 2