Question

A physical quantity P is described by the relation P= a^1/2 b^2 c^3 d^-4 . If the relative error in the measurement of a,b,c and d respectively are 2% , 1%, 3%, 5% then the relative error in P will be? (a) 8% (b) 12% (c) 32% (d) 25%

Answer 1

a......................
...........

Answer 2

Answer:

ans. c)32%

Explanation:

ΔP/P*100=(1/2*Δa/a*100)+(2Δb/b*100)+(3Δc/c*100)+(4Δd/d*100)

        =(1/2*2+2*1+3*3+4*5)%

        =32%(ans.)