Question

On heating one end of a rod, the temperature of whole rod will be uniform when

• A. K = 1
• B. K = 0
• C. K = 100
• D. $K = \infty$

Answer 1

Answer: (D)

$K = \infty$

Answer 2

$\frac { d Q } { d t } = - K A \frac { d \theta } { d x }$ ; when $K = \infty , \frac { d \theta } { d x } = 0$

i.e. θ is independent of x i.e. constant or uniform.