Two spherical stars A and B emit blackbody radiation. The radius of A is 400 times that of B and A emits 10⁴ times the power emitted from B. The ratio $({\mathrm{\lambda }}_{\mathrm{A}}/{\mathrm{\lambda }}_{\mathrm{B}})$ of their wavelengths [${\mathrm{\lambda }}_{\mathrm{A}}$ and ${\mathrm{\lambda }}_{\mathrm{B}}$ are wavelengths at which the peaks occur in their respective radiation curves] is