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.
- A15%
- B25%
- C75%
- D5%
Correct answer: B
Solution
(b)Dimensional formula for Torque [] = []
Now
Percentage error in torque = % = % M + 2 % L
2 % T
% = 25%