engineering recuitment BEL Probationary Engineers Mock Test 2025 Heat Transfer Radiation

Incident radiation of 1000 W/m2 falls on the object. The energy absorbed by the object is 400 W/m2 and energy transmitted is 350 W/m2. What will be the value of reflectivity?

1
0.40
2
0.35
3
0.75
4
0.25
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