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प्रश्न
The maximum load a wire can withstand without breaking, when its length is reduced to half of its original length, will ______.
विकल्प
be double.
be half.
be four times.
remain same.
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उत्तर
The maximum load a wire can withstand without breaking, when its length is reduced to half of its original length, will remain same.
Explanation:
Because breaking stress = `"Breaking force"/"Area of cross section"`
As breaking force does not depend on length. Thus, changing the cross-section has no effect which implies breaking force remains the same.
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