Question # In the figure, the distribution of energy density of the radiation emitted by a blackbody at a given temperature is shown. The possible temperature of the black body is

# In the figure, the distribution of energy density of the radiation emitted by a blackbody at a given temperature is shown. The possible temperature of the black body is

1. 1500 K

2. 2000 K

3. 2500 K

4. 3000 K

Solution

Weints law

[

begin{array}{l}

lambda=1.5 mathrm{mm}

begin{aligned}

lambda T=& 2.9 times 10^{-3} mathrm{m} cdot mathrm{K}

T=& frac{2.9}{1.5} times 10^{-3} mathrm{lo}^{-3} mathrm{con} mathrm{m} cdot mathrm{k}

&=2 times 10^{3} mathrm{k}

end{aligned}

end{array}

]

(2) ( Ans )