Question

If the radius of a star is R and it acts as a black body, what would be the temperature of the star, in which the rate of energy production is Q?

(a) Q/4πR²σ

(b) (Q/4πR²σ)^-1/2

(c)  (4πR²σ/σ)^1/4

(d)   (Q/4πR²σ)^1/4

Answer 1

Correct option (d)   (Q/4πR²σ)^1/4

Explanation:

According to Stefan's law Q = σAT⁴