Pressure drop of water flowing through a pipe (density 1000 kg/m3) between two points is measured by using a vertical U-tube manometer. Manometer uses a liquid with density 2000 kg/m3. The difference in height of man metric liquid in the two limbs of the manometer is observed to be 10 cm. the pressure drop between the two points is:
a. 98.1 N/m2
b. 981 N/m2
c. 1962 N/m2
d. 19620 N/m2