sun and neptune

nahi toh... dekhti hun......

thanks sky .. have u read the message i posted in ur chatbox !!

i think i got your doubt...

think like this... does he whole 2piR² surface recieve equal amount of energy ?

NO..

only the point directly facing sun recieves the whole energy..

other points receive parts of it ..

Why....Bhaiya....plz....see the diagram,,,,,,

the area receiving sun radiation is clearly half the surface area of Neptune...so....why dont we take,...2Î r²

A is correct

energy emitted by sun is
σ 4Ï€R_s² T_s⁴

Energy per unit area distributed in the sphere which passes thro neptune's orbit and has radius R_SN ..

σ 4Ï€R_s² T_s⁴/ 4Ï€R_SN²
= σ (R_s/ R_SN)² T_s⁴
energy absorbed by neptune
σ (R_s/ R_SN)² T_s⁴ * component of Area of neptune's surface on the sphere recieving the energy* a_λ
=σ a_λ (R_s/ R_SN)² Ï€ R_N² T_s⁴
... A

actually the area recieving the energy is a circle on the big sphere whose radius is equal to radius of neptune ...

arrre yaar actually the are equal to the cross section of neptune is recieving the energy on the surface of the big sphere .. imagine karo na 3D ...

No yaar mera bhi yahi aya tha par ans a hain