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

Q. 6.  To clean their spectacles, people often breathe out on glasses to make them wet. Explain why the glasses become wet.

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R Riya

Because as the breath that is coming out of the mouth is moist, thereby making the glass of spectacles cooler. And because of that, water vapours that are present in the air surrounding the glass condense and get attached to the glass surface. Therefore, the glass becomes wet.

 

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