The energy radiated by a sphere of radius 0.2 m and surface temperature 800 K is E. Then the energy radiated by the sphere of radius 0.8 m and surface temperature 400 K is:
1
E
2
2E
3
E/2
4
4E
The energy radiated by a sphere of radius 0.2 m and surface temperature 800 K is E. Then the energy radiated by the sphere of radius 0.8 m and surface temperature 400 K is: