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55. Two capillary tubes of the same length but different radii

r₁ and r₂ are fitted in parallel to the bottom of a vessel. The pressure head is P. What should be the radius of a single tube that can replace the two tubes so that the rate of flow is same as before

(a) r₁ + r₂ (b) r₁² + r₂ ²

Answer-d

(9)

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55. Two capillary tubes of the same length but different radii

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12. An ideal gas is taken through the cycle A→ B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is

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