28. A given shaped glass tube having uniform cross section is filled with water and is mounted on

a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity ω then

(a)   Water levels in both sections A and B go up

(b)   Water level in Section A goes up and that in B comes down

(c)   Water level in Section A comes down and that in B it goes up

(d)   Water levels remains same in both sections

Answer-a

(3)