InterviewSolution
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InterviewSolution
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The length of a rectangular plate is measured by a meter scale and is found to be ` 10.0 cm`. Its width is measured by vernier callipers as `1.00 cm`. The least count of the meter scale and vernier calipers are `0.1 cm and 0.01 cm` respectively. Maximum permissibe error in area measurement is.A. `pm0.2 cm^(2)`B. `pm 0.1 c m^(2)`C. `pm 0.3 cm^(2)`D. zero |
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Answer» Correct Answer - A A=lb=10.0x 1.00=10.00 `(DeltaA)/A=(Deltal)/l+(DeltaB)/b` `(DeltaA)/10.00=0.1/10.0+0.01/1.00` `rArr DeltaA=10.00(1/100+1/100)=10.00(2/100)=pm0.2 cm^(2)` |
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