ENTRANCE TEST – 2011 :: Discussion


11.A wire is stretched by a force which causes an extension. The energy is stored in it only when:
A.The extension of wire is proportional to force applied
B.The cross-section area of the wire remains constant
C.The wire is not stretched beyond its elastic limit
D.The weight of wire is negligible
Answer:  Option  A
Explanation:

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Published by:Nimra Saeed

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