Question

I WILL GIVE BRAINLIEST IF CORRECT !!!!

Answer 1

Answer:

C. $3.2\times 10^{1}$

Step-by-step explanation:

$d_r$ = Diameter of a red blood cell = $0.0008\ \text{cm}$

$d_w$ = Diameter of a whooping cough virus = $2.5\times 10^{-5}\ \text{cm}$

Ratio of the diameter of the red blood cell to the diameter of the whooping cough virus

$\dfrac{d_r}{d_w}=\dfrac{0.0008}{2.5\times 10^{-5}}=\dfrac{0.0008}{25\times 10^{-6}}=\dfrac{0.0008\times 10^6}{25}\\\Rightarrow \dfrac{d_r}{d_w}=\dfrac{800}{25}\\\Rightarrow \dfrac{d_r}{d_w}=32=3.2\times 10^{1}$

The required ratio is $3.2\times 10^{1}$.