The heat radiation energy emitted by a 20 cm x 20 cm square plate at a temperature of 527 degrees Celsius is 114.8 Watts. What is the emissivity of the plate?
(Stefan-Boltzmann constant = 5.67x10⁸ W/m²K⁴)
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(Stefan-Boltzmann constant = 5.67x10⁸ W/m²K⁴)
Watch videos related to MODERN PHYSICS:
https://dailymotion.com/playlist/x90qrm
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