Q. 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?
A) $\frac{1.23}{0.01} \times 100$
B) $\frac{0.01}{1.23} \times 100$
C) $2 \times \frac{0.01}{1.23} \times 100$
D) $3 \times \frac{0.01}{1.23} \times 100$
Explanation
Percentage error in measurement of a side $= \frac{0.01}{1.23} \times 100$ Percentage error in measurement of area $= 2 \times \frac{0.01}{1.23} \times 100$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.