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].
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....
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