First slide
Errors
Question

The length of a strip measured with a metre rod is 10.0 cm. Its width measured with a vernier calipers is 1.00 cm. The least count of the metre rod is 0.1 cm and that of vernier calipers is 0.01 crn. What will be error in its area?

Moderate
Solution

Area of strip = lb

  ΔAA×100=Δll×100+Δbb×100

=0.110×100+0.011×100=±2%

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