Question

Hairs of human nose can remove all particles of size greater than

a. 1 mm b. 1micron

c. 10 micron d. 100 micron​

Answer 1

Hairs of human nose can remove all particles of size greater than c. 10 micron.

• The nose of a person acts as a filter to trap dust and particles in it.
• The nose hair help in trapping of dust particles which are greater than 10 micron so that these particles do not reach the lungs.
• If a particle greater than 10 micron is size reaches the lungs, then is can cause adverse effects and hence our nose acts as a filter.

Answer 2

Explanation:

Hairs of human nose can remove all particles of size greater than 10 micron