NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS

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Analyzing +4 | -1

Which of the following five physical parameters have the same dimensions (A) Energy density (B) Refractive index (C) Dielectric constant (D) Young’s modulus (E) Magnetic field

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Correct option: A

(A) and (D)

Option A ((A) and (D)) is correct because Energy density and Young's modulus both have the same dimensions of

ML^{-1}T^{-2}

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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}} }}

is that of