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Physics - Unit & Dimension Question with Solution | TestHub

PhysicsUnit & DimensionMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

The density of a material, in the shape of a cube, is determined by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are $1.5 %$ and $1 %$ , respectively, the maximum error in determining the density is

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Answer:

Solution:

$ρ \Rightarrow \frac{M}{L^{3}}$

$\frac{Δ ρ}{ρ} \Rightarrow \frac{Δ M}{M} + \frac{3 Δ L}{L}$

$\frac{Δ ρ}{ρ} \times 100 \Rightarrow 1.5 + 3 \times 1$

$%$ relative error $= 4.5 %$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Unit & DimensionSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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