1.

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»

Correct option is (B) 25%

Dimensional formula for Torque 

[\(\tau\)] = [ML2T–2]

Now

Percentage error in torque = % \(\tau\) = % M + 2 % L + 2 % T 

% \(\tau\) = 25%



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