Physics - Unit & Dimension Question with Solution | TestHub

PhysicsUnit & DimensionMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

If unit of length, mass and time each be doubled, the new unit of work done is _____ times the old unit of work

Options:

Answer:

Solution:

$n_{2} = n_{1} {[\frac{M_{2}}{M_{1}}]}^{1} {[\frac{L_{2}}{L_{1}}]}^{2} {[\frac{T_{2}}{T_{1}}]}^{- 2}$

Given, $M_{2} = 2 M_{1}, L_{2} = 2 L_{1}, T_{2} = 2 T_{1}$

$∴ n_{2} = n_{1} {[2]}^{1} {[2]}^{2} {[2]}^{- 2} = 2 n_{1}$

Stream:NTA_ABHYASSubject:PhysicsTopic:Unit & DimensionSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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