`b=(L)/(4pid^(2))`
The brightness of a celestial body, like a star decrease as you move away from it. In contrast, the luminosity of a celestial body is a constant number that represents its intrinsic brightness. The inverse square law, shown above, is used to find the brightness, b, of a celestrial body when you know its luminosity, L, and the distance, d, in meters to the body. Which equation shows the distance to a celestrial body, given its brightness and luminosity?

Options

A. `d=(1)/(2)sqrt((L)/(pib))`
B. `d=sqrt((L)/(2pib))`
C. `d=(sqrt(L))/(2pib)`
D. `d=(L)/(2sqrt(pib))`

Answer

A