The light of wavelength 590 nm passes via two narrow slits 0.60 mm apart. Each and every slit is 0.2 mm wide. The screen is 1.7 m away.

(i) Determine how far away on the screen is the 4th interference minimum from the central maximum?

(ii) Where is the third diffraction minimum situated relative to the central maximum?

(iii) Determine how many interference maxima lie in the central diffraction maximum? Sketch a neat schematic diagram representing the intensity distribution of interference pattern in the central diffraction maximum.

(iv) When the intensity at the peak of the central maximum (I0) is 5 W/m2, determine the intensity at the position of the second order interference maximum?

(v) Determine how will the patterns on the screen change when one of the slits is covered so that no light can pass via it?