NEET Physics (general) MCQ Question
Which of the following statements about the measurement of physical quantities in a laboratory setting is correct?
The accuracy of mass determined by a physical balance can be affected by friction between its components.
The corrected height of a block is calculated by adding the error to the mean height.
The internal volume of a beaker can be calculated using the formula πV²h without any corrections.
The mean mass of an object is calculated by taking the average of the standard mass and the measured mass directly.
Correct Answer
Detailed Explanation
The accuracy of mass determined by a physical balance is indeed influenced by friction, as noted in the NCERT context which highlights minimization of errors caused by friction between the balance's components. Statement B incorrectly states to add the error, while statement C ignores necessary corrections, and statement D misunderstands how to calculate mean mass.
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