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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS

1 Medium

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Analyzing +4 | -1

Which of the following is dimensionless?

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Correct option: A

\frac{{{v^2}}}{{r\mathrm{g}}}

Option A (8) is correct because the time taken for collision is directly proportional to the side length when masses are scaled proportionally.

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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

\frac{1}{{\sqrt {{\varepsilon _0}{\mu _0}} }}