A glass tube of uniform internal radius (r) has a valve separating the two identical ends. Initially, the valve is in a tightly closed position. End 1 has a hemispherical soap bubble of radius r. End 2 has sub-hemispherical soap bubble as shown in figure. Just after opening the valve,
Text Solution
Verified by ExpertsThe correct answer is:
B
Pressure inside tube = P = P 0 + 
∴ P 2 < P 1 (since r 2 > r 1 )
Hence pressure on side 1 will be greater
than side 2. So, air from end 1
flows towards end 2.
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