The diagram shows three glass containers. All three contain water filled to the same vertical height 
.
The base area of P is equal to the base area of R. The base area of Q is larger than the other two. Students are asked to compare the water pressure at the bottom of each container.
Student 1 says that the pressure at base R is more than the pressure at base P.
Student 2 says that the pressure at base Q is less than the pressure at base P.
Student 3 says that the pressures at all three bases are the same.
Which students are correct?
none are correct
1 only
2 only
3 only
