Heat is getting convected from a surface into air. The temperature of the surface is $140$ deg C and the temperature of the air is $30$ deg C$.$ If the convection heat flux is $1000\frac{W}{m^2},$ what is the value of the convection heat transfer coefficient?

Q$\_$conduction $=-$kAd$\frac{T}{d}x$

Q$\_$convection $=$ hA $($T$\_$sur $-T_{-}$fluid$)$

$9\mathrm{.}1\frac{W}{m^2}K$

$4\mathrm{.}5$ W$/m^{2}K$

$11\frac{W}{m^2}K$

$0\mathrm{.}11\frac{W}{m^2}K$