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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS

1 Hard

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Application +4 | -1

The external and internal diameters of a hallow cylinder are measured to be

(4.23 \pm 0.01)\,cm

and

(3.89 \pm 0.01)\,cm

. The thickness of the wall of the cylinder is

View answer and explanation

Correct option: C

(0.17 \pm 0.01)\,cm

Option C (

(0.17 \pm 0.01)\,cm

) is correct because it accurately calculates the thickness and its associated error.

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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}} }}