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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS

1 Medium

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Application +4 | -1

The length

l,

, breadth b and thickness t of a block are measured with the help of a metre scale. Given

l = 15.12 \pm 0.01

cm,

b = 10.15 \pm 0.01

cm,

t = 5.28 \pm 0.01

cm.The percentage error in volume is

View answer and explanation

Correct option: C

0.0037

Option C (0.0037) is correct because the percentage error in volume is the sum of the percentage errors in length, breadth, and thickness.

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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}} }}