JEE Main20199 Apr 2019Morning ShiftPhysicsMathematics in PhysicsActual
In the density measurement of a cube, the mass and edge length are measured as 10.00 ± 0.10 k g and 0.10 ± 0.01 m , respectively. The error in the measurement of density is:
Options
- A0.31
- B0.10
- C0.07
- D0.01
Correct answer
A. 0.31
Step-by-step solution
Density ρ = m a s s v o l u m e ∆ ρ ρ = ∆ m m + ∆ V V = ∆ m m + 3 ∆ a a ∵ V = a 3 = 0.1 10 + 3 0.01 0.1 = 0.01 + 3 0.1 = 0.31