Test Academy | 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 r₁ +r₂, r₁² +r₂², r₁⁴ +r₂⁴, None of these

Question

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

Options :

r₁ +r₂
r₁² +r₂²
r₁⁴ +r₂⁴
None of these

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