You visited us 1 times! Enjoying our articles? Unlock Full Access!

Stefan-Boltzman's Law

A body of sur...

Question

A body of surface area $5 c m^{2}$ and temperature $727^{o} C$ emits $300$ J of energy per minute. Its emissivity will be

0.18

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

0.28

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.81

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 0.18
The values of parameters can be substituted in Stefan's law and the value of emmissivity can be found from given data. The correct answer is A.

Suggest Corrections

Similar questions

5 c m^{2}

727^{o} C

5 c m^{2}

727^{o} C

727^{o} C

c m^{2}

5 \times 10^{- 4} m^{2}

727^{o} C

728^{o}

5 c m

300 J

= 5.67 \times 10^{- 8} W m^{2} K^{4}

Join BYJU'S Learning Program