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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Thermodynamics
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Q)

A rod of radius ' r ' & length ' l ' is beaten such that its length doubles . If it took $\;t_{0}\;$ seconds to transfer heat Q , how much time will it take now ?

$(a)\;t_{0}\qquad(b)\;2t_{0}\qquad(c)\;4t_{0}\qquad(d)\;\large\frac{t_{0}}{2}$

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