Hi guys, Is there anyway I can locate PlotLegends inside the data Frame? Plus, can I control its location inside the Frame? Let's say, I'd like to put it either top-right or bottom-left. Any help will be very appreciable.

ClearAll
\[Sigma] = 5.67 10^-8; "Stefan-Boltzmann Constant";
\[Epsilon] = 1; "Emissivity";
\[Alpha] = 1; "Absorbtivity";
\[Tau] = 1; "Transmittance";
g = 1 10^3; "Solar radiation 1Kw/m^2";
c = Range[10, 50, 10]; "Concentration";
receff[x_] = \[Alpha] \[Tau] - (\[Sigma] \[Epsilon] (x^4 - 
      293.15^4))/(c g);
Plot[Evaluate[receff[x]], {x, 293.15, 1073.15}, 
 PlotStyle -> (Directive @@ # & /@ 
    Transpose[{Join[ConstantArray[Dashed, 5]], 
      Flatten[ConstantArray[{Black, Red, Blue, Green, Purple}, 1]]}]),
  PlotRange -> {{250, 1000}, {0, 1.05}}, Frame -> True, 
 FrameLabel -> {"Temperature (K)" , "Efficiency (%)"}, 
 PlotLegends -> LineLegend[c, LegendLabel -> "Solar Concentration"], 
 LabelStyle -> Directive[Black, Bold, {16, GrayLevel[0.3]}]]