Heat TransferEasy
Question
The temperature of a perfect black body is 727oC and its area is 0.1 m2. If stefan′s constant = 5.67 × 10-8 watt/m2−s−k4, then heat radiated by it in 1 min. is :
Options
A.8100 cal
B.81000 cal
C.810 cal
D.81 cal
More Heat Transfer Questions
Which of the following statement is correct for ideal black body :...Radiation from a black body at the thermodynamic temperature T1 is measured by a small detector at distance d1 from it. ...If E is the total energy emitted by a body at a temperature TK and Emax is the maximum energy emitted by it at the same ...A black body is at temperature if 2800 K. The energy of radiation emitted by this body with wavelength between 499 nm an...On a cold morning, a metal surface on touching is felt colder than a wooden surface,because the metal has:...