The diameter measured under various trials for a wire using a microscope were 0.205 𝜇m, 0.209 𝜇m and 0.198 𝜇m. If the known diameter is , the percentage of error for an average measurement is
A. 1.8 %
B. 3.5 %
C. 2.4 %
D. 2.0 %
Answer:D
The diameter measured under various trials for a wire using a microscope were 0.205 𝜇m, 0.209 𝜇m and 0.198 𝜇m. If the known diameter is , the percentage of error for an average measurement is
A. 1.8 % B. 3.5 % C. 2.4 % D. 2.0 %