JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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Application +4 | -1

A physical quantity is represented by

X = {\mathrm{M}^\alpha }{\mathrm{L}^b}{\mathrm{T}^{ - c}}.

. If percentage errors in the measurements of M,L and T are

\alpha \% ,\beta \%

and

\gamma \%

respectively, then total, percentage error is

View answer and explanation

Correct option: B

\left( {\alpha a + \beta b + \gamma c} \right)\%

Option B (

\left( {\alpha a + \beta b + \gamma c} \right)\%

) is correct because the percentage error is the sum of the absolute values of the errors multiplied by their respective powers.

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