An aircraft (m\=2.8×105kg, wing area 480m2) flies level. What is the pressure difference across the wings? (Take g\=9.8m
ΔP⋅A = mg. mg = 2.8×105×9.8 = 2.744×106N, A = 480m2. ΔP = 2.744×106480 = 5716.67Pa≈5717Pa. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 5717 Pa. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: NCBI Bookshelf, Ideal Gas Law: P1V1/T1 = P2V2/T2.