Q.

A physical quantity P is given as P=a2b3cd. The percentage error in the measurement of a, b, c and d are 1%, 2%, 3% and 4% respectively. The percentage error in the measurement of quantity P will be          [2023]

1 13%  
2 14%  
3 12%  
4 16%  

Ans.

(1)

PP×100%=(2aa+3bb+cc+12dd)×100%

                                =2(1%)+3(2%)+3%+12×4%=13%