Heat TransferEasy
Question
Radius of two spheres of same material are 1 & 4 m respectively and their temp. are 4 × 103 and 2 × 103 K respectively. Then ratio of emitted energy of spheres per sec. will be -
Options
A.1 : 21 : 2
B.2 : 1
C.1 : 1
D.4 : 1
More Heat Transfer Questions
Two rods of copper and brass having the same length and cross - section are joined end to end. The free end of the coppe...The temperature drop through layer furnace wall is 900oc. Each layer is of equal area of cross - section. Which of the f...Two spheres of radii in the ratio 1 : 2 and densities in the ratio 2 : 1 and of same specific heat, are heated to same t...There are two identical vessels filled with equal amount of ice, the vessels are of different metals, if the ice melts i...The intensity of heat radiation by a point source measured by a thermopile placed at a distance d is I, If the distance ...