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10.2 , transmission of heat — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics10.2 , transmission of heat1 Mark
MCQ
Three conducting rods of same material and cross section are shown in figure. Temperature at $A,D$ and $C$ are maintained at $20\ ^oC, 90\ ^oC$ and $0\ ^oC$. The ratio of lengths of $BD$ and $BC$ if there is no heat. Flows in $AB$ is
  • A
    $\frac{2}{7}$
  • ✓
    $3.5$
  • C
    $4.5$
  • D
    $\frac{2}{9}$
✓

Answer

Correct option: B.
$3.5$
b

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