Ratio of radii of radiating bodies from their powers and temperatures

1. A.
   $\left(\frac{T_2}{T_1}\right)^4$
2. B.
   $\left(\frac{T_2}{T_1}\right)^2$
3. C.
   $\left(\frac{T_1}{T_2}\right)^4$
4. D.
   $\left(\frac{T_1}{T_2}\right)^2$

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1. A.
   $\frac{1}{2}\left(\frac{T_2}{T_1}\right)^{4}$
2. B.
   $\frac{1}{\sqrt{2}}\left(\frac{T_2}{T_1}\right)^{2}$
3. C.
   $2\left(\frac{T_1}{T_2}\right)^{4}$
4. D.
   $2\left(\frac{T_1}{T_2}\right)^{2}$

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1. A.
   $\left( \frac{T_{1}}{{\text{ }T}_{2}} \right)^{4}$
2. B.
   $\left( \frac{T_{1}}{{\text{ }T}_{2}} \right)^{2}$
3. C.
   $\left( \frac{T_{2}}{{\text{ }T}_{1}} \right)^{4}$
4. D.
   $\left( \frac{T_{2}}{{\text{ }T}_{1}} \right)^{2}$

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1. A.
   $\frac{T_{2}}{T_{1}}$
2. B.
   $\frac{T_{1}}{T_{2}}$
3. C.
   $\left( \frac{T_{2}}{T_{1}} \right)^{2}$
4. D.
   $\left( \frac{T_{1}}{T_{2}} \right)^{2}$

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1. A.
   $\left(\dfrac{T_1}{T_2}\right)^2$
2. B.
   $\left(\dfrac{T_1}{T_2}\right)^4$
3. C.
   $\left(\dfrac{T_2}{T_1}\right)^2$
4. D.
   $\left(\dfrac{T_2}{T_1}\right)^4$

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1. A.
   $1200 : 1$
2. B.
   $900 : 1$
3. C.
   $600 : 1$
4. D.
   $300 : 1$

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