Question

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 callipers are $0.1 cm$ and $0.01 cm$ respectively (Obviously). Maximum permissible error in area measurement is -

(1) $\pm 0.2 cm ^{2}$

(2) $\pm 0.1 cm ^{2}$

(3) $\pm 0.3 cm ^{2}$

(4) Zero

Answer 1

Maximum permissible error in area measurement is ± 0.2 cm².

So, The correct option of this question is (1).