Question

Weighing machine ${}^{\prime }{A}^{\prime }$ is showing 15.324 kg, and weighing machine ${}^{\prime }{B}^{\prime }$ is showing 15.1 kg for an object whose actual mass is 15 kg then,

• A. ${}^{\prime }{A}^{\prime }$ is more precise but less accurate than ${}^{\prime }{B}^{\prime }$.
• B. ${}^{\prime }{A}^{\prime }$ is less precise but more accurate than ${}^{\prime }{B}^{\prime }$.
• C. ${}^{\prime }{A}^{\prime }$ is more precise and more accurate than ${}^{\prime }{B}^{\prime }$.
• D. ${}^{\prime }{B}^{\prime }$ is more precise and more accurate than ${}^{\prime }{A}^{\prime }$.

Answer 1

The correct option is A ${}^{\prime }{A}^{\prime }$ is more precise but less accurate than ${}^{\prime }{B}^{\prime }$.

Accuracy implies closeness to true value, and precision implies the least count of the device.