A sphere of radius 10 cm is hung inside an oven whose walls are at a temperature of 1000 K. Calculate total heat energy incident per second (in joules//sec) on the sphere, sigma=5.67xx10^(-8) mks units.

A sphere of radius 10 cm is hung inside an oven whose walls are at a t

1.	A sphere of radius 10 cm is hung inside an oven whose walls are at a temperature of 1000 K. Calculate total heat energy incident per second (in joules//sec) on the sphere, sigma=5.67xx10^(-8) mks units.
Answer» <html><body><p><br/></p>Solution :Here, `r=10 cm =10^(1) m, T=1000 K`, <br/> `<a href="https://interviewquestions.tuteehub.com/tag/sigma-1207107" style="font-weight:bold;" target="_blank" title="Click to know more about SIGMA">SIGMA</a>= 5.67xx10^(-8)` mks units <br/> Heat energy incident/sec area`=sigma T^(<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>)` <br/> Total heat energy incident/sec <br/> `E=sigma T^(4)` x area of sphere `=sigma T^(4)xx4 pi r^(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)` <br/> `=5.67xx10^(-8)xx(10^(3))^(4)xx4xx(22)/(<a href="https://interviewquestions.tuteehub.com/tag/7-332378" style="font-weight:bold;" target="_blank" title="Click to know more about 7">7</a>)(10^(-1))^(2)` <br/> `E= 7128 j s^(-1)`</body></html>