9. Nidhi pushed the plunger of syringecompletely and dipped its needle

9. Nidhi pushed the plunger of syringecompletely and dipped its needle in water.Then she slowly pulled the plunger while itsneedle was still immersed in water. Selectthe correct statement regarding this.(A) Water will move in the syringe whenshe pushed the plunger down due toair pressure.(B) When she pushed the plunger down allthe air moved out creating an emptyspace in syringe.(C) Air outside the syringe exerted pressureon water causing it to move in whenthe plunger is pulled up.(D) Both (B) and (C)

Answer»

Answer:

both b and c

Explanation:

b. emepty is CREATED and there is no AIR inside so water will ENTER the syringe.

c. when she pulls the plunger VACCUM is created to fill the vaccum water has to enter which is DONE by the air pressure.