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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Units and Measurement
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If fundamental units of mass, length and time are each doubled, what happens to unit of energy

\[(a)\;halved \quad (b)\;tripled \quad (c)\;doubled \quad (d)\;becomes \;4\;times\]

Can you answer this question?
 
 

1 Answer

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$[E]=[ML^2T^{-2}]$
$[E']=[2M4L^2T^{-2}/4]$
$\qquad=2[E]$
Hence c is the correct answer. 
 
answered Jun 18, 2013 by meena.p
edited Jul 11, 2014 by balaji.thirumalai
 

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