Two capillary tubes of same length but different radii r_(1)andr_(2) 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

Two capillary tubes of same length but different radii r_(1)andr_(2) a

1.	Two capillary tubes of same length but different radii r_(1)andr_(2) 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
Answer» `r_(1)^(4)+r_(2)^(4)` `(r_(1)^(2)+r_(2)^(2))^((1)/(4))` `(r_(1)^(4)+r_(2)^(4))^((1)/(4))` `r_(1)+r_(2)` ANSWER :C