A black body with surface area 0.001 `m^(2)` is heated upto a temperature 400 K and is suspended in a room temperature 300K. The intitial rate of loss of heat from the body to room is

A black body with surface area 0.001 m^2 is heated upto a temperature 400 K and is suspended in a room temperature 300 K. The initial rate of loss of heat from the body to room is

A blackbody of surface area 10cm^(2) is heated to 127^(@)C and is suspended in a room at temperature 27^(@)C calculate the initial rate of loss of heat from the body to the room.

A blackbody of surface area 10cm^(2) is heated to 127^(@)C and is suspended in a room at temperature 27^(@)C calculate the initial rate of loss of heat from the body to the room.

A blackbody of sarface area 10cm^(2) is heated to 127^(@)C and is suspended in a room at temperature 27^(@)C calculate the initial rate of loss of heat from the body to the room.

A copper cube with sides o flength 20 mm had its surface blackened. The cube is heated up to 500K and placed inside a room at a constant temperature of 300K. Calculate the initial rate of temperature fall of the cube, assuming it as a perfect black-body. (Stefan's constant = 5.7 xx 10^(-8) W//m(2) //K^(4) specific heat capacity of aluminium = 400 J //kg//K , density of aluminium = 7800 kg//m^(3) ) where A is the surface area of the cube, T_(1) is the temperature of the body, and T_(2) is the temperature of the enclosure.

A body of emissivity (e = 0.75) , surface area of 300cm^(2) and temperature 227^(@)C is kept in a room at temperature 27^(@)C . Calculate the initial value of net power emitted by the body.

A body of emissivity (e = 0.75) , surface area of 300cm^(2) and temperature 227^(@)C is kept in a room at temperature 27^(@)C . Calculate the initial value of net power emitted by the body.

A human body has a surface area of approximately 1 m^2 . The normal body temperature is 10 K above the surrounding room temperature T_0 . Take the room temperature to be T_0 = 300 K . For T_0 = 300 K , the value of sigmaT_0^4=460 Wm^(-2) (where sigma is the Stefan-Boltzmann constant). Which of the following options is/are correct?