1.

A force F is applied on a square area of side L. Ifthe percentage error in the measurement of L is2% and that in Fis 4%, what is the maximumpercentage error in pressure?(2) 4%(1) 2%(3) 6%(4) 8%​

Answer»

<P>Percentage ERROR in L=2%

Percentage error in F=4%

We know that, P=

A

F

​

=

L

2

F

​

P

△P

​

×100=

F

△F

​

×100+2

L

△L

​

×100

=[4+2(2)]% = 8%.



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