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If the length of a wire is reduced to ha...

If the length of a wire is reduced to half, then it can hold the…..load

A

`(W)/(2)`

B

`(W)/(4)`

C

2W

D

W

Text Solution

Verified by Experts

The correct Answer is:
D
The load held by a wire does not depend upon the length of the wire. The breaking force (load) depends upon the area of cross section (A) and it does the intermolecular force (F) is given by `F = -(dU)/(dX)`. In the region AB, the slope of the graph `((dU)/(dX))` is -ve.
`:. F` is +ve.
The +ve sign shows that the force is repulsive or the molecules are repelled when X lies between A and B. In the region BC, the slope `((dU)/(dX))` is +ve. `:. F` is -ve.
The -ve sign shows that it is an attractive force or the molecules are attracted when X lies between B and C.
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