Physics, asked by mehar123, 1 year ago

a spherical body with radius 12 cm radiates 450W power at 500K . if the radius were halved and the temperature doubled what would be the power radiated?

Answers

Answered by afnan1141

3

Power radiated by black body is proportional to Area and Temp raised to power 4,

P = σA(T^4) ,Stefan-Boltzmann Law

Radius is halved area becomes one fourth Temp become doubled.

P becomes 4 times.

Power becomes 1800 W

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