Liquid is flowing throgh a tube of nonuniform cross section ratio of the radius at entry a and exit end B of the tube is 3 :2. Then the ratio of velocities at entry A and exit B of liquid is ……

Liquid is flowing throgh a tube of nonuniform cross section ratio of t

1.	Liquid is flowing throgh a tube of nonuniform cross section ratio of the radius at entry a and exit end B of the tube is 3 :2. Then the ratio of velocities at entry A and exit B of liquid is ……
Answer» `4:9` `9:4` `8:27` `1:1` Solution :`(r_(A))/(r_(B))=(3)/(2)` `(v_(A))/(v_(B))=?` According to EQUATION of CONTINUITY, `A_(A)v_(A)=A_(B)v_(B)` `(v_(A))/(v_(B))=(A_(B))/(A_(A))=(pir_(B)^(2))/(PIRA^(2))` `therefore(v_(A))/(v_(B))=((r_(B))/(r_(A)))^(2)=((2)/(3))^(2)` `(v_(A))/(v_(B))=(4)/(9)`