The total area of cross-section is 0.25m2 . If the blood is flowing at the rate of 100cm3/sec , then the average velocity of flow of blood through the capillaries is :

Question

The total area of cross-section is 0.25m2 . If the blood is flowing at the rate of 100cm3/sec , then the average velocity of flow of blood through the capillaries is : (A) 4mm/sec (B) 400mm/sec (C) 0.4mm/sec (D) 25mm/sec

Tardigrade Admin · Accepted Answer

Rate of flow Q=Av v=(Q/A)=(100 × 10- 6/0 . 25)=4× 10- 4m/s=0.4mm/s

Q. The total area of cross-section is $0.25 m^{2}$ . If the blood is flowing at the rate of $100 c m^{3} / sec$ , then the average velocity of flow of blood through the capillaries is :

$4 mm / sec$

$400 mm / sec$

$0.4 mm / sec$

$25 mm / sec$

Rate of flow $Q = A v$
$v = \frac{Q}{A} = \frac{100 \times 1 0 ^{- 6}}{0.25} = 4 \times 1 0^{- 4} m / s = 0.4 mm / s$

Q. The total area of cross-section is 0.25m2 . If the blood is flowing at the rate of 100cm3/sec , then the average velocity of flow of blood through the capillaries is :

4mm/sec

400mm/sec

0.4mm/sec

25mm/sec