Conduction|Temperature Gradient|Variable (Unsteady) State|Steady State|Rate Of Flow Of Heat (Heat Current)

Rate Of Heat Flow

Steady And Unsteady Flow

Under steady state, the temperature of a body

State the units of heat .

In variable state, the rate of flow of heat is controlled by

Statement-1: If an annular disk is heated uniformly then outer radius increases but inner radius decreases. Statement-2: Temperature gradient of a rod is constant in steady state. Staement-3: Density of metal decreases with increase in temperature.

In the steady state of temperature the flow of heat across the body depends :

A lagged stick of cross section area 1 cm^(2) and length 1 m is initially at a temperature of 0^(@)C . It is then kept between 2 reservoirs of temperature 100^(@)C "and" 0^(@)C . Specific heat capacity is 10J//kg^(@)C and linear mass density is 2kg//m . Find (i) Temperature gradient along the rod in steady state (ii) Total heat absorbed by the rod to reach steady state