MHT CET 2025 Physics question

Which of the following comes under the category of random errors?

(A)Improper calibration of thermometer
(B)Zero error of 1V in voltmeter
(C)Student measures 22, where as the correct angle is 20
(D)Errors resulting from the fluctuations in electric power supplyCorrect

Answer: (D)

Solution

Random errors arise from unpredictable, uncontrollable variations that change in magnitude and sign from reading to reading, e.g. fluctuations in the electric power supply, temperature or pressure; they are reduced by averaging many readings. Hence (D) is correct. (A)

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Question ID VK-102480