Question

solar constant on earth is 1.36 × 10/3 W m-2 , if mars is qt a distance of 1.52 AU from the sun, calculate the solqr constant on mars applying stefans law

Answer 1

A concave mirror would be best suited for use in a solar cooker because it reflect and focus the sunlight at a point. The temperature at that point increases which heats and cooks the food placed at that point.

Answer 2

The solar constant is a power of solar electromagnetic radiation per unit area. The Stefan’s Law gives

Power=σT^4 A

Here A is an area of Sun surface.

The power of solar electromagnetic radiation per unit area near surface of planet

Solar constant=G_sc=(σT^4 A)/(4πa^2 )

So

(G_sc (Mars))/(G_sc (Earth) )=(a_E^2)/(a_M^2 )=(1 AU)^2/(1.52 AU)^2 =0.433

Finally, the solar constant on Mars

G_sc (Mars)=0.433×G_sc (Earth)=0.433×1.36×〖10〗^3=0.589×〖10〗^3 W∙m^(–2)