Question

a. What is tube well ? Describe its structure
and working.

b. The mercury level decreases in barometer as the altitude increases, why?

c. We cannot use water as a barometric substances,why?​

Answer 1

It is a type of shotwell in which we fill water and then we used it for harvesting the field .it is generally used in small villages for harvesting fillds and is used by farmers.

Answer 2

Answer:

It is a type of shotwell in which we fill water and then we used it for harvesting the field .it is generally used in small villages for harvesting fillds and is used by farmers.