AP EAMCET · PHYSICS · Mechanical Properties of Fluids
In a cylinder provided with a piston, air is under pressure \(P_1\) at a constant temperature ' \(t\) '. A soap bubble with radius ' \(r\) ' and surface tension ' \(\mathrm{T}\) ' is lying inside the cylinder. To reduce the radius of the soap bubble to half, the required air pressure inside the cylinder is
- A \(8 \mathrm{P}_1+\frac{24 \mathrm{~T}}{\mathrm{r}}\)
- B \(8 \mathrm{P}_1+\frac{3 \mathrm{~T}}{\mathrm{r}}\)
- C \(8 \mathrm{P}_1+\frac{2 \mathrm{~T}}{\mathrm{r}}\)
- D \(8 \mathrm{P}_1+\frac{12 \mathrm{~T}}{\mathrm{r}}\)
Answer & Solution
Correct Answer
(A) \(8 \mathrm{P}_1+\frac{24 \mathrm{~T}}{\mathrm{r}}\)
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Detailed explanation
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