Question

To clean spectacles , people often breathe out on glasses to make them wet . Explain why the glasses become wet .

Answer 1

Answer:

To clean their spectacles, often breathe out on glasses to make them wet. Explain why the glasses become wet? To breathe out gases contain in water-vapour. The water-vapour condenses at spectacles so glass becomes wet and with the help of small amount of water, it is easy to clean the spectacles.

Answer 2

Answer:

Explanation:

Our exhaled air contain water vapours. So those water vapours become condense and we can see that the glass becomes wet becoz of that.