MHT CET202617 April 2026Evening ShiftPhysicsMathematics in PhysicsActual
A force 'F' is applied on a square plate of side 'L'. If the percentage error in determining 'L' is 3% and that in 'F' is 2% then the percentage error in determining the pressure is
Options
- A5 %
- B6 %
- C7 %
- D8 %
Correct answer
D. 8 %
Step-by-step solution
Pressure is given by P = F A For a square plate of side L , the area is A = L^2 Therefore, P = F L^2 The maximum percentage error in pressure is given by P P 100 = F F 100 + 2 ( L L 100 ) Given F F 100 = 2 % and L L 100 = 3 % Substituting the values, we get P P 100 = 2 % + 2(3 %) = 8 % Answer: 8 %