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Units and Measurement
If fundamental units of mass, length and time are each doubled, what happens to unit of energy
\[(a)\;halved \quad (b)\;tripled \quad (c)\;doubled \quad (d)\;becomes \;4\;times\]
jeemain
physics
class11
ch2
units-and-measurement
q30
easy
dimensional-formulae-and-analysis
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asked
Jun 18, 2013
by
meena.p
retagged
Jul 11, 2014
by
balaji.thirumalai
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1 Answer
$[E]=[ML^2T^{-2}]$
$[E']=[2M4L^2T^{-2}/4]$
$\qquad=2[E]$
Hence c is the correct answer.
answered
Jun 18, 2013
by
meena.p
edited
Jul 11, 2014
by
balaji.thirumalai
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