(a) In a diffraction experiment, the slit is illuminated by light of wavelength 600 nm. The first minimum of the pattern falls at θ=30∘. Calculate the width of the slit.
OR
(b) In a Young's double-slit experiment, two light waves, each of intensity I0, interfere at a point, having a path difference 8λ on the screen. Find the intensity at this point.
a. In a diffraction experiment, the slit is illuminated by light of wavelength 600 nm. The first minimum of the pattern falls at θ=30∘. Calculate the width of the slit.
b. OR: In a Young's double-slit experiment, two light waves, each of intensity I0, interfere at a point, having a path difference 8λ on the screen. Find the intensity at this point.