JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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Application +4 | -1

The pressure on a square plate is measured by measuring
the force on the plate and length of the sides of the plate by using the formula

P = \frac{F}{{{l^2}}}

. If the maximum errors in the measurement of force and length are 4% and 2% respectively, then the maximum error in the measurement of pressure is

View answer and explanation

Correct option: C

0.08

Option C (8%) is correct because the maximum error in pressure is the sum of the percentage error in force and twice the percentage error in length, as derived from the formula

P = \frac{F}{{{l^2}}}

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