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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS
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A geometry ruler has 20 divisions between 5 cm. Its least count is
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Correct option: A
0.25 cm
Option A (0.25 cm) is correct because the least count is calculated by dividing the length between the divisions by the number of divisions.
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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