The temperature of sun is $5500 K$ and it emits maximum intensity radiation in the yellow region $(5.5 \times {10^{ - 7}}m)$. The maximum radiation from a furnace occurs at wavelength $11 \times {10^{ - 7}}m.$The temperature of furnace is ....... $K$
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(b) ${\lambda _{{m_1}}}T = {\lambda _{{m_2}}}{T_2}$
==> $5.5 \times {10^{ - 7}} \times 5500 = 11 \times {10^{ - 7}}T$
$T = 550 \times 5K = 2750K$
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