JEE · NEET Previous Year Question

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:

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

  1. A15%
  2. B25%
  3. C75%
  4. D5%

Correct answer: B

Solution

(b)
Dimensional formula for Torque [] = []
Now
Percentage error in torque = % = % M + 2 % L
2 % T
% = 25%

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