A cylindrical rod having temperature ${T_1}$ and ${T_2}$ at its ends. The rate of flow of heat is ${Q_1}$ $cal/sec$. If all the linear dimensions are doubled keeping temperature constant then rate of flow of heat ${Q_2}$ will be
A cylindrical rod having temperature ${T_1}$ and ${T_2}$ at its ends. The rate of flow of heat is ${Q_1}$ $cal/sec$. If all the linear dimensions are doubled keeping temperature constant then rate of flow of heat ${Q_2}$ will be
- [AIPMT 2001]
- A
$4{Q_1}$
- B
$2{Q_1}$
- C
$\frac{{{Q_1}}}{4}$
- D
$\frac{{{Q_1}}}{2}$
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- [KVPY 2021]
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