Statement I : If length of a rod is doubled the breaking load remains unchanged.
Statement II : Breaking load is equal to the elastic limit.

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If statement I is true but statement II is false

If both statement I and statement II are true but statement II is not the correct explanation of statement I

If both statement I and statement II are false

If both statement I and statement II are true and statement II is the correct explanation of statement I

answer is C.

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Detailed Solution

Breaking load depends on the area of cross-section and is independent of length of rod. Hence,

Breaking load = breaking stress $\times$ cross-sectional area.

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