Question

Calculate the surface temperature of the planet, if the energy radiated by unit area in unit time is 5.67 ×10⁴ watt. (a) 1273°C (b) 1000°C (c) 727°C (d) 727K

Answer 1

Explanation:

According to stefan's Boltzmann law, the energy radiated per unit time:

E=σAT⁴

It is given that: E=5.67×104

Therefore, 5.67×10⁴=5.67×10^−8×1×T⁴

So, T=1000K

T=1000−273= 727 celcius (option c)