wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

If S and V are the change in surface area and volume, when two soap bubbles coalesce under isothermal condition, then (σ is surface tension, Po is atmospheric pressure)


A

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A


Let a and b be the radius of two soap bubbles forming a soap bubble of radius c. Then
(Po+4σa)43πa3+43πb3(Po+4σb)=(Po+4σc)43πc3
i.e., Po[43π(a3+b3c3)]=4σ[43π(c2a2b2)]
PoV=4σS3
3PoV+4σS=0
So choice (1) is correct and the rest are wrong


flag
Suggest Corrections
thumbs-up
2
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Electric Field Due to Charge Distributions - Approach
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon