JEE Advanced 2020 Concept Recapitulation Test 3 Paper 1

Find the electric flux (in SI unit) crossing the wire frame ABCD of length I=1m width b and whose center is at a distance OP=d(=b∕2) from an infinite line of charge with linear charge density λ=π∕18×10− ‌9c∕m. Consider that the plane of frame is perpendicular to line OP.