1.

The measured mass and volume of the body are 22*42g and 4*7cm^(3) respectively with permissible errors 0*01g and 0*1cm^(3). The maximum % error in density is about :

Answer»

`0.2%`
`2%`
`5%`
`10%`

Solution :DENSITY `(RHO)=("mass(m)")/("volume(V))`
`:.(Deltarho)/(rho)xx100=(Deltam)/(m)xx100+(DeltaV)/(V)xx100`
`=(0*01)/(22*42)xx100+(0*1)/(4*7)xx100=2%`
So correct choice is `(b).`


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