The following figure shows tow air-filled bulbs connected by a U-tube partly filled with alcohol. What happens to the levels of alcohol in the limbs 
and 
when an electric bulb placed midway between the bulbs is lighted?
A
The level of alcohol in limb 
falls while that in limb 
rises
falls while that in limb rises
B
The level of alcohol in limb 
rises while that limb 
falls
rises while that limb falls
C
The level of alcohol falls in both limbs
D
There is no change in the levels of alcohol in the two limbs
Text Solution
Verified by ExpertsThe correct answer is:
A
The bulb which is painted black will absorb more heat, air on the side 
will be heated up, it expands and will push the level towards 
. Therefore, the level of alcohol in limb 
falls while that in limb 
rises.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The ratio of densities of two bodies is and specific heat in the ratio . The ratio of their therm…
Two uniform metal rods of lengths and and coefficients of linear expansion and , respectively a…
One end of a copper rod of length 2 m and area of cross section is immersed in boiling water and t…
19 g of water at and 5 g of ice at are mixed together in a calorimeter. What is the final tempera…
A lead bullet, of initial temperature and speed penetrates into a solid object and melts. If of …
A 42 kg block of ice moving on rough horizontal surface stops due to friction, after sometime. If t…