A Young's Double-Slit Apparatus Is Set Up

Multiple Choice

A Young's double-slit apparatus is set up.The source wavelength is 430 nm,and the double-slit spacing is 0.040 mm.At what distance from the double slits should the screen be placed if the spacing between alternating bright fringes is to be 2.6 cm? (1 nm = 10−⁹ m)

A) 2.9 m
B) 2.4 m
C) 2.2 m
D) 1.6 m