Question

A water tank of height 10m, completely filled with water is placed on a level ground. It has two holes one at 3 m and the other at 7 m from its base. The water ejecting from (a) both the holes will fall at the same spot (b) upper hole will fall farther than that from the lower hole (c) upper hole will fall closer than that from the lower hole (d) more information is required

Answer 1

Answer:

Let h be the height of the hole.

From Bernoulli's Theorem,

v=

2g(10−h)

This is the velocity of water from a hole at height h from bottom.

Thus the range of the water from the hole=vt=

2g(10−h)

g

2h

=2

h(10−h)

Thus it is same for h=3m and h=7m.