Question

A physical quantity A is related to four observable a,b,c and d as follows, `A=(a^2b^3)/(csqrtd)`, the percentage errors of measurement is a,b,c and d,are `1%`,`3%`,`2%` and `2%` respectively. What is the percentage error in the quantity A?
A. `12%`
B. `7%`
C. `5%`
D. `14%`

Answer 1

Correct Answer - d
Precentage error in A
`= (2 xx 1 + 3 xx 3 + 1 xx 2 + (1)/(2) xx 2)% 14%`