Saved Bookmarks
| 1. |
A wire has a mass `(0.3+-0.003)g`, radius `(0.5+-0.005)mm` and length `(6+-0.06)cm`. The maximum percentage error in the measurement of its density isA. 1B. 2C. 3D. 4 |
|
Answer» `p=(M)/(V)=(M)/(pir^(2)h)` `(Deltap)/(p)=(DeltaM)/(M)+(2Deltar)/(r)+(Deltah)/(h)` (for maximum error) `(DeltaM)/(M)=(0.003)/(0.3)xx100=1%` `(Deltar)/(r)=(.05)/(0.5)xx100=1%` `(Deltal)/(kl)=(0.06)/(6)xx100=1%` `(Deltap)/(p)=4%` |
|