engineering recuitment UPPSC AE Mock Test 2024 Heat Transfer Radiation

Two spheres A and B of the same material have radii 1 m and 4 m and temperature 4000 K and 2000 K respectively. The energy radiated by sphere A is 

1
greater than that of sphere B 
2
less than that of sphere B 
3
equal to that of sphere B 
4
equal to double that of sphere B 
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