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JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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Analyzing +4 | -1

Assertion : The error in the measurement of radius of the
sphere is 0.3%.The permissible error in its surface area is
0.6%.
Reason : The permissible error is calculated by the formula

\frac{{\Delta A}}{A} = \frac{{4\Delta r}}{r}

View answer and explanation

Correct option: C

Assertion is correct, reason is incorrect

Assertion is correct, reason is incorrect. The assertion is correct because the error in surface area is twice the error in radius, but the reason provides the wrong formula.

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