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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS

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Application +4 | -1

A physical quantity A is related to four observables a,b,c and d as follows

\;A = \frac{{{a^2}{b^3}}}{{c\sqrt d }}

The percentage errors of measurement in a,b,c and d are 1%, 3%, 2% and 2% respectively. What is the percentage error in the quantity A?

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Correct option: D

14\%

Option D (14%) is correct because percentage errors are added after multiplying by the power of each variable in the formula.

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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}} }}