Question 794: Thermodynamics & KTG

Question

About black body radiation, which of the following is the wrong statement?

Accepted Answer

$$\begin{aligned}
& \quad 	ext { Given: } \frac{R}{C_V}=0.4 \
& C_V=\frac{R}{0.4}=\frac{5 R}{2} \
& C_P=C_V+R \
& 	herefore \quad C_P=\frac{7 R}{2} \
& \gamma=\frac{C_P}{C_v}=\frac{\frac{7}{5}}{\frac{5}{2}} \
& \gamma=\frac{7}{5}
\end{aligned}$$
$$	herefore \quad$$ The gas is made up of rigid diatomic molecules.

Answer

For all wavelengths, intensity is same.

Answer

For shorter wavelengths, intensity is more.

Answer

For longer wavelengths, intensity is less.

Answer

All wavelengths are emitted by a black body.

Thermodynamics & KTG

About black body radiation, which of the following is the wrong statement?

Choose the correct answer: