1.

A brass rod has length 0.2m area of cross section 1.0cm^2 and Young's modulus 10^11Nm^(-2)If it is compressed by 5kg. wt along its length then the change in its energy will be

Answer»

An increase of`2.4 XX 10^(-5) J`
A DECREASE of `2.4 xx 10^(-5) J`
An increase of `2.4 xx 10^7 J`
A decrease of `2.4 xx 10^7 J`

ANSWER :A


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