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Thermal Physics

Cool goIITian

Joined:	8 Dec 2010
Post:	85

17 Jan 2012 18:53:55 IST

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Contraction of a rod

Physics

what if a rod(initial length l) with coefficient of linear expansion alpha is cooled by temperature (delta)T ,,, where (delta)T=(alpha)^(-1)..i.e. 1/(alpha)????

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apoorv

Cool goIITian

Joined: 12 Sep 2011

Posts: 64

25 Jan 2012 23:35:45 IST

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LET THE NEW LENGTH BE-l'

AND ORIGINAL LENGTH BE-l

WE KNOW,

HENCE,l'-l=l

so,l'=2l

so,length of rod gets doubled!!!!

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