railway RRB Technician Grade 1 Mock Test 2024 Physics Thermal Properties of Matter Heat transfer

A spherical black body of 10 cm radius is maintained at 327°C. What is the power radiated?

(σ = 5.67 × 10-8 W/m2K4)

1
231 W
2
462 W
3
923 W
4
1050 W
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