TS EAMCET · Physics · Thermal Properties of Matter
The surface tension of the soap water solution is . The free energy of the surface layer of a soap bubble of diameter will be
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
Given: Diameter of the soap bubble d=5 mm. The surface tension of the soap water solution is T=110π The expression for the free energy of the surface layer is given by,E=T2 A=T4πR2=T24πd24 (Since the soap has two surfaces)…
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