Question

Activity 11.9
Take a plastic bottle. You can take
a discarded water or soft drink
bottle. Fix a cylindrical glass tube,
a few cm long near its bottom as
shown in Fig. 11.15. You can do so
by slightly heating one end of the
glass tube and then quickly
inserting it near the bottom of the
bottle. Make sure that the water
does not leak from the joint. If there
is any leakage, seal it with molten
wax. Cover the mouth of the glass
tube with a thin rubber sheet as you
did in Activity 11.8. Now fill the
bottle upto half with water. What do
you observe? Why does the rubber sheet fixed to the glass tube bulge this time? pour some more water in bottle. is there any change in bulge of rubber sheet. ​

Answer 1

Answer:

1) we observe that the rubber sheet bulges

2) because of the weight of the water above creates pressure on the rubber sheet making it bulge

3) with increase in water the pressure increases

making it bulge even more

Answer 2

Answer:

Explanation:

7