Water containing air bubbles flows without turbulence through a horizontal pipe which has a region of narrow cross-section. In this region the bubbles

Options

A. Move with greater speed and are smaller than in the rest of the pipe
B. Move with greater speed and are larger in size than in the rest of the pipe
C. Move with lesser speed and are smaller than in the rest of the pipe
D. Move with lesser speed and are of the same size as in the rest of the pipe

Answer

B

Explanation

According to Bernoulli theorem in the region of narrow cross section of pipe KE of fluid will be greater and pressure energy will be lesser
`implies` Less pressure results into larger size of air bubble and greater KE results its greater speed.