Tag: heat and modes of heat transfer

Question 1

Multiple choice physics temperature and heat modes of heat transfer - conduction conduction heat and modes of heat transfer

A cylinder of radius $R$ made of a material of thermal conductivity $K _1$ is surrounded by a cylindrical shell of inner radius $R$ and outer radius $2R$ made of a material of thermal conductivity $K _2$. The two ends of the combined system are maintained at two different temperatures. There is no loss of heat across the cylindrical surface and the system is in steady state. The effective thermal conductivity of the system is?

$\dfrac{K _{1}+3K _{2}}{4}$
$\dfrac{8K _{1}+K _{2}}{9}$

Reveal answer Fill a bubble to check yourself

Answer

$K _1+K _2$

Answer

$\dfrac{K _{1}+8K _{2}}{9}$

Question 2

Multiple choice physics temperature and heat modes of heat transfer - conduction conduction heat and modes of heat transfer

In order that the heat flows one part of a solid to another part, what is required ?

uniform density
density gradient
uniform temperature

Reveal answer Fill a bubble to check yourself

Answer

temperature gradient

Tag: heat and modes of heat transfer

Questions Related to heat and modes of heat transfer