1.

A physical quantity Q is found to depend on observables x, y and z, obeying relation Q=(x^(3)y^(2))/(z). The percentage error in the measurements of x, y and z are 1%, 2% and 4% respectively. What is percentage error inthe quantityQ ?

Answer»

`4%`
`3%`
`11%`
`1%`

Solution :`(DELTA Q)/(Q) = 3(Delta X)/(x) + 2(Delta y)/(y) + (Delta Z)/(z) = 3 XX 1+ 2 xx 2 + 4 = 11%`


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