InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
A wire of length `l = +- 0.06cm` and radius `r =0.5+-0.005 cm` and mass `m = +-0.003gm`. Maximum percentage error in density isA. `4`B. `2`C. `1`D. `6.8` |
|
Answer» Correct Answer - A `rho = (m)/( pi r^(2) l)` `rArr ((Delta rho)/( rho) xx 100) = ((Delta m)/( m) + ( 2 Delta r)/( r ) + ( Delta l)/( l)) xx 100` ` = ((0.003)/( 0.3) + ( 2 xx 0.005)/( 0.5) + ( 0.06)/( 6)) xx 100 = 4%` |
|