JEE Mains · Physics · STD 11 - 1. units,dimensions and measurement
A torque meter is calibrated to reference standards of mass, length and time each with \(5 \%\) accuracy. After calibration, the measured torque with this torque meter will have net accuracy of\(............\%\)
- A \(15\)
- B \(25\)
- C \(75\)
- D \(5\)
Answer & Solution
Correct Answer
(B) \(25\)
Step-by-step Solution
Detailed explanation
Dimensional formula for Torque \([\tau]=\left[ ML ^{2} T ^{-2}\right]\) Now Percentage error in torque \(=\% \tau=\% M +2 \% L+2 \% T\) \(\% \tau=25 \%\)
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