The following figure shows two air-filled bul | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) black surface is a better absorber of thermal radiation compared to a white or shiny surface. When the electric bulb is lighted,it emits thermal r

Vedclass · Accepted Answer

The level of alcohol in limb $X$ falls while that in limb $Y$ rises.

Vedclass · Answer

(A) black surface is a better absorber of thermal radiation compared to a white or shiny surface. When the electric bulb is lighted,it emits thermal radiation in all directions. The black bulb absorbs more heat energy from this radiation than the white bulb. As a result,the air inside the black bulb expands more significantly due to the higher temperature increase. This increased pressure pushes the alcohol level down in limb $X$. Consequently,the alcohol level in limb $Y$ rises. Therefore,the correct observation is that the level of alcohol in limb $X$ falls while that in limb $Y$ rises.

Similar Questions

Heat energy is incident on the surface of a material at the rate of $1000 \ J \ min^{-1}$. If the coefficient of absorption is $0.8$ and the coefficient of reflection is $0.1$,then the amount of heat energy transmitted through the material in $5$ minutes is: (in $J$)

In the rainy season,on a clear night,the black seat of a bicycle becomes wet because:

If the transmission power of a surface is $\frac{1}{9}$ and the reflective power is $\frac{1}{6}$,then what is its absorptive power?

The sun radiates electromagnetic energy at the rate of $3.9 \times 10^{26} \ W$. Its radius is $6.96 \times 10^8 \ m$. The intensity of sunlight at the solar surface will be (in $W/m^2$):

About black body radiation, which one of the following is a $WRONG$ statement?

Vedclass Test Series

Exam Paper Generator

Online Exam Module