Question
Download Solution PDF'Two spherical soap bubbles of radii r1 and r2 coalesce to form a bubble of radius R. If the surface tension of soap solution is T, atmospheric pressure is P, the change in volume of the air enclosed is V and the change in surface area is 'A'. Complete the expression using above statement, 3PV + ___ = 0
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT
The excess pressure inside a soap bubble of radius R and surface tension T is
Also when the two spherical soap bubbles coalesce to form a new soap bubble temperature of the soap bubble remains constant.
By applying the following equation
CALCULATION:
Absolute pressure inside the soap bubble of radius r1
Absolute pressure inside the soap bubble of radius r2
Absolute pressure inside the resulting soap bubble is r3
Now applying the equation
⇒ 3PV + 4TA = 0
Hence the completed expression is
Last updated on Jun 19, 2025
-> The AAI ATC Exam 2025 will be conducted on July 14, 2025 for Junior Executive..
-> AAI JE ATC recruitment 2025 application form has been released at the official website. The last date to apply for AAI ATC recruitment 2025 is May 24, 2025.
-> AAI JE ATC 2025 notification is released on April 4, 2025, along with the details of application dates, eligibility, and selection process.
-> A total number of 309 vacancies are announced for the AAI JE ATC 2025 recruitment.
-> This exam is going to be conducted for the post of Junior Executive (Air Traffic Control) in the Airports Authority of India (AAI).
-> The Selection of the candidates is based on the Computer-Based Test, Voice Test and Test for consumption of Psychoactive Substances.
-> The AAI JE ATC Salary 2025 will be in the pay scale of Rs 40,000-3%-1,40,000 (E-1).
-> Candidates can check the AAI JE ATC Previous Year Papers to check the difficulty level of the exam.
-> Applicants can also attend the AAI JE ATC Test Series which helps in the preparation.