Question 17.2
Explain the following observations very briefly
The arrow of weather cock points towards a particular direction at a particular moment.
Shows the latest direction of the wind.
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.
Question 17.3
An empty glass in fact is not empty.