Question

1 point

Answer 1

Answer:

B. 3.12 x $10^{-3}$ m

Explanation:

From the given picture, it can be deduced that;

the diameter of the image of lumen = 25.0 mm

                                                      = 25.0 ÷ 1000

                                                      = 0.025 m

And,

magnification = $\frac{diameter of the image of lumen}{actual diameter of lumen}$

But magnification = 8,and diameter of the image of lumen = 0.025 m.

So that;

8 = $\frac{0.025}{actual diameter of lumen}$

⇒ actual diameter of lumen = $\frac{0.025}{8}$

                         = 0.003125

Actual diameter of lumen of the blood vessel is 3.12 x $10^{-3}$ m.