Question

The length of a strip measured with a meter rod is 10.0cm. Its width measured with a venier calipers is 1.00cm. The least count of the meter rod is 0.1 cm and that of vernier calipers 0.01cm. What will be error in its area?
A. `pm13%`
B. `pm7%`
C. `pm4%`
D. `pm2%`

Answer 1

Correct Answer - D
`:.((DeltaA)/(A))xx100=((Deltal)/(l))xx100+((Deltab)/(b))xx100`
`=(0.1)/(10)xx100+(0.01)/(1)xx100=pm2%`