During blood transfusion the needle is i | Class 11 Physics Chapter Mechanical Properties of Fluids, Mechanical Properties of Fluids NCERT Solutions

Question:

During blood transfusion the needle is inserted in a vein where the gauge pressure is 2000 Pa. At what height must the blood container be placed so that blood may just enter the vein? [Use the density of whole blood from Table 10.1].

Answer:

Gauge pressure, P = 2000 Pa

Density of whole blood, p = 1.06 × 103 kg m-3

Acceleration due to gravity, g = 9.8 m/s2

Height of the blood container = h

Pressure of the blood container, P = hpg

∴ h = P / pg

= 2000 / 1.06 x 103 x 9.8

= 0.1925

The blood may enter the vein if the blood container is kept at a height greater than 0.1925 m, i.e., about 0.2 m.


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Welcome to the NCERT Solutions for Class 11 Physics - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 24: During blood transfusion the needle is inserted in a vein where the gauge pressure is 2000 Pa. At wh....