Question
In an experiment, four quantities a,b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively. Quantity P is calculated as follows:
P = 
, error in P is
-
14 %
-
10 %
-
7 %
-
4 %
Solution
A.
14 %
Here, P = 
Therefore,
= 
= 
= 3 x1 + 2 x 2 + 3 +4
= 3 + 4 + 3 + 4
= 14 %
