For a single-slit Fraunhofer pattern, let I₀ be the central-maximum intensity and I the intensity at a point where the path difference between the two slit edges is 3λ/4. Find the value of 9π²I/I₀.
Physics · Wave Optics
JEE Mains

Question

For a single-slit Fraunhofer pattern, let I₀ be the central-maximum intensity and I the intensity at a point where the path difference between the two slit edges is 3λ/4. Find the value of 9π²I/I₀.

Physics · Wave Optics

G1 Physics · Accepted Answer

For the stated diffraction/interference geometry, apply the single-slit minimum condition together with the YDSE bright-fringe condition and count only the allowed orders. The source result is 8. Answer: 8.