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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS
1
Medium
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Analyzing
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Assertion: Out of three measurements ; and , the last one is most accurate.
Reason: In every measurement, only the last significant digit is not accurately known.
Reason: In every measurement, only the last significant digit is not accurately known.
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Correct option: B
If both assertion and reason are true but reason is not the correct explanation of the assertion.
Option B (If both assertion and reason are true but reason is not the correct explanation of the assertion) is correct because while both the assertion and reason are true statements, the reason doesn't directly explain why the last measurement is most accurate.
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Statement-I: Random errors can be positive or negative.
Statement-II: Cause of random errors are uncertain. An object is moving through the liquid. The viscous damping force acting on it is proportional to the velocity. Then dimension of constant of proportionality is The error due to parallax is a: 2.34 is obtained by rounding of the number The dimensional formula of self-inductance is The dimension of is that of
Statement-II: Cause of random errors are uncertain. An object is moving through the liquid. The viscous damping force acting on it is proportional to the velocity. Then dimension of constant of proportionality is The error due to parallax is a: 2.34 is obtained by rounding of the number The dimensional formula of self-inductance is The dimension of is that of