InterviewSolution
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InterviewSolution
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Statement I: The expanded length l of a rod of original length `l_0` is not correctly given by (assuming `alpha` to be constant with T) `l=l_0(1+alphaDeltaT)` if `alphaDeltaT` is large. Statement II: It is given by `l=l_0e^(alphaDeltaT)`, which cannot be treated as being approximately equal to `l=l_0(1+alphaDeltaT)` for large value a `DeltaT`.A. Statement I is true, Statement II is true and Statement II is the correct explanation for statement I.B. Statement I is true, statement II is true and statement II NOT the correct explanation for Statement IC. Statement I is true, Statement II is false.D. Statement I is false, statement II is true. |
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Answer» Correct Answer - A `alpha=(1)/(l)(dl)/(dT)` `impliesalphaint_(T0)^(T)dT=int_(l0)^(l)(dl)/(l)` `impliesl=l_0e^(alphaDeltaT)` |
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