Question

A black body is at 727°C. It emits energy at a rate, which is proportional to ___________

(a) (727)^2

(b) (1000)^2

(c) (727)^4

(d) (1000)^4

Answer 1

Correct choice is (d) (1000)^4

To elaborate: Eα(273+727)^4

Eα(1000)^4.