A sphere of radius r, density,`rho` and specific heat s is heated to temperature `theta` and then cooled in an enclosure at temperature `theta_(0)` . How , the rate of fall of temperature is related with r, `rho` and s?

If a piece of metal is heated to temperature theta and the allowed to cool in a room which is at temperature theta_0 , the graph between the temperature T of the metal and time t will be closet to

If a piece of metal is heated to temperature theta and the allowed to cool in a room which is at temperature theta_0 , the graph between the temperature T of the metal and time t will be closet to

If a piece of metal is heated to temperature theta and the allowed to cool in a room which is at temperature theta_0 , the graph between the temperature T of the metal and time t will be closet to

A solid sphere of radius 'R' density rho and specific heat 'S' initially at temperature T_(0) Kelvin is suspended in a surrounding at temperature 0K. Then the time required to decrease the temperature of the sphere from T_(0) to (T_(0))/(2) kelvin is (Assume sphere behaves like a black body)

A solid sphere of radius 'R' density rho and specific heat 'S' initially at temperature T_(0) Kelvin is suspended in a surrounding at temperature 0K. Then the time required to decrease the temperature of the sphere from T_(0) to (T_(0))/(2) kelvin is (Assume sphere behaves like a black body)

A solid sphere of radius 'R' density 'rho' , and specific heat 'S' initially at temperature T_0 Kelvin is suspended in a surrounding at temperature 0 K. Then the time required to decrease the temperature of the sphere from T_0 to T_0/2 Kelvin is alpha xx (rhoSR)/(sigmaT_0^3) . Find alpha . (Assume sphere behaves like a black body )

If a piece of metal is heated to temperature and then allowed to cool in a room which is at temperature theta_0 , the graph between the temperature T of the metal and time I will be closest to :