An aircraft (m\=4.5×105kg, wing area 600m2) flies level. What is the pressure difference across the wings? (Take g\=9.8m
ΔP⋅A = mg. mg = 4.5×105×9.8 = 4.41×106N, A = 600m2. ΔP = 4.41×106600 = 7350Pa. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 7350 Pa. This satisfies dimensional consistency and physical conditions given, so option C is scientifically correct.
Ref: NCBI Bookshelf, Ideal Gas Law: P1V1/T1 = P2V2/T2.