Question

The length l , breadth b, and thickness `t` of a block of wood were measured with the help os a measuring scale. The results with permissible errors ( in cm) are
`l = 15.12 +-0.01, b = 10.15+-0.01` , and `t = 5.28 +- 0.01`.
The percentage error in volume up to proper significant figures is
A. `0.28 %`
B. `0.35%`
C. `0.48%`
D. `0.64%`

Answer 1

Correct Answer - B
Percentage error in volume is
` ( 0.01)/( 15.12) xx 100 + ( 0.01)/( 10.15) xx 100 + ( 0.01)/( 5.285) xx 100 = 0.35%`