In a Young’s double-slit experiment, the slit separation is d=0.30mm and the screen is kept D=1.5m away. The experiment is performed with light of wavelength λ=600nm.
Answer the following.
(i) Calculate the path difference between the two interfering beams at a point on the screen that is 2.50mm above the central bright fringe.
(ii) State whether the point specified in part (i) will appear bright or dark.
(iii) Determine the angular separation (in radians) between the 3rd and the 5th bright fringes.