Question Detail
Question
In a Young's double slit experiment, the first dark fringe makes an angle of 1 degree with the axis. Calculate the slit separation if light of wavelength 600 nm is used.
Correct Answer
Option C is the correct answer.
Detailed Explanation
d sin(theta)=lambda/2 for first dark fringe. d=(600e-9)/(2 sin1deg)=1.72e-5 m.
Hint
d sin(theta)=lambda/2 for first dark fringe.