JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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One side of a cubical block is measured with the help of a vernier callipers of vernier constant 0.01 cm. This side comes out to be 1.23 cm. What is the percentage error in the measurement of area?

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Correct option: C

2 \times \frac{{0.01}}{{1.23}} \times 100

Option C (

2 \times \frac{{0.01}}{{1.23}} \times 100

) is correct because the percentage error in area is twice the percentage error in the side length.

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