Question 17.3
Explain the following observations very briefly
An empty glass in fact is not empty.
Even the so called empty glass is not infact empty. It is filled with air.
Explain the following observation very briefly. (a) A firki does not rotate in a closed area. (b) The arrow of weather cock points towards a particular direction at a particular moment. (c) An empty glass in fact is not empty. (d) Breathing through mouth may harm you.
Question 17.1
A firki does not rotate in a closed area.
Question 17.4
Breathing through mouth may harm you.