MHT CET · Physics · Mechanical Properties of Fluids
In air, a charged soap bubble of radius \(R\) breaks into 64 small soap bubbles of equal radius \(r\). The ratio of mechanical force per unit area of big soap bubble to that of a small bubble is
- A \(1: 4\)
- B \(4: 1\)
- C \(2: 1\)
- D \(1: 2\)
Answer & Solution
Correct Answer
(A) \(1: 4\)
Step-by-step Solution
Detailed explanation
\(R^3 = 64r^3 \implies R = 4r\) Mechanical force per unit area \( = P_{ex} = \frac{4T}{R}\)
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