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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS

1 Easy

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Application +4 | -1

What are the units of

K = 1/4\pi {\varepsilon _0}

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Correct option: B

N{m^2}{C^{ - 2}}

Option B (

Nm^2C^{-2}

) is correct because K is the electrostatic constant in Coulomb's law, and its unit is derived from the formula F = k(q1q2/r²).

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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}} }}