JEE PHYSICS MCQ: UNITS & MEASUREMENTS

1 Easy

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

View answer and explanation

Correct option: C

If Assertion is true, but Reason is false.

Assertion is true because the permissible error in the surface area is indeed 0.6%. Reason is false because the correct formula is

\frac{\Delta A}{A}=2 \frac{\Delta r}{r}

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