Question:
In a measurement, the random error
In a measurement, the random error
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Random errors decrease with repeated measurements and averaging, while systematic errors require calibration or method correction.
Updated On: May 1, 2026
- can be decreased by increasing the number of readings and averaging them
- can be decreased by changing the person who takes the reading
- can be decreased by using new instrument
- can be decreased by using a different method in taking the reading
- can never be decreased
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The Correct Option is A
Solution and Explanation
Concept:
Random errors occur due to unpredictable fluctuations in measurement conditions. These errors can be reduced statistically.
Step 1: Understand nature of random error.
Random errors vary in magnitude and direction and cannot be eliminated completely.
Step 2: Method to reduce random error.
Taking multiple readings and calculating their average reduces the effect of random fluctuations.
Step 3: Evaluate options.
Changing instrument or method mainly affects systematic errors, not random errors. \[ \Rightarrow \text{Correct option is (A)} \]
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