143151
A cylinder of height $h$ is filled with water and is kept on a block of height $h / 2$. The level of water in the cylinder is kept constant. Four holes numbered 1, 2, 3 and 4 are at the side of the cylinder and at heights $0, \mathrm{~h} / 4, \mathrm{~h} / 2$ and $3 \mathrm{~h} / 4$, respectively. When all four holes are opened together, the hole from which water will reach farthest distance on the plane $P Q$ is the hole number.
143152 A U-shaped tube is partially filled with an incompressible liquid of density $1.2 \mathrm{~g} / \mathrm{cm}^{3}$. Oil which does not mix with the liquid is next poured into left side of the U-tube until the liquid rises by $15 \mathrm{~cm}$ on the right side of $U$ tube. If the density of the oil is $0.9 \mathrm{~g} / \mathrm{cm}^{3}$, the oil level will stand higher than the liquid level of right side of $U$-tube by
143151
A cylinder of height $h$ is filled with water and is kept on a block of height $h / 2$. The level of water in the cylinder is kept constant. Four holes numbered 1, 2, 3 and 4 are at the side of the cylinder and at heights $0, \mathrm{~h} / 4, \mathrm{~h} / 2$ and $3 \mathrm{~h} / 4$, respectively. When all four holes are opened together, the hole from which water will reach farthest distance on the plane $P Q$ is the hole number.
143152 A U-shaped tube is partially filled with an incompressible liquid of density $1.2 \mathrm{~g} / \mathrm{cm}^{3}$. Oil which does not mix with the liquid is next poured into left side of the U-tube until the liquid rises by $15 \mathrm{~cm}$ on the right side of $U$ tube. If the density of the oil is $0.9 \mathrm{~g} / \mathrm{cm}^{3}$, the oil level will stand higher than the liquid level of right side of $U$-tube by
143151
A cylinder of height $h$ is filled with water and is kept on a block of height $h / 2$. The level of water in the cylinder is kept constant. Four holes numbered 1, 2, 3 and 4 are at the side of the cylinder and at heights $0, \mathrm{~h} / 4, \mathrm{~h} / 2$ and $3 \mathrm{~h} / 4$, respectively. When all four holes are opened together, the hole from which water will reach farthest distance on the plane $P Q$ is the hole number.
143152 A U-shaped tube is partially filled with an incompressible liquid of density $1.2 \mathrm{~g} / \mathrm{cm}^{3}$. Oil which does not mix with the liquid is next poured into left side of the U-tube until the liquid rises by $15 \mathrm{~cm}$ on the right side of $U$ tube. If the density of the oil is $0.9 \mathrm{~g} / \mathrm{cm}^{3}$, the oil level will stand higher than the liquid level of right side of $U$-tube by
143151
A cylinder of height $h$ is filled with water and is kept on a block of height $h / 2$. The level of water in the cylinder is kept constant. Four holes numbered 1, 2, 3 and 4 are at the side of the cylinder and at heights $0, \mathrm{~h} / 4, \mathrm{~h} / 2$ and $3 \mathrm{~h} / 4$, respectively. When all four holes are opened together, the hole from which water will reach farthest distance on the plane $P Q$ is the hole number.
143152 A U-shaped tube is partially filled with an incompressible liquid of density $1.2 \mathrm{~g} / \mathrm{cm}^{3}$. Oil which does not mix with the liquid is next poured into left side of the U-tube until the liquid rises by $15 \mathrm{~cm}$ on the right side of $U$ tube. If the density of the oil is $0.9 \mathrm{~g} / \mathrm{cm}^{3}$, the oil level will stand higher than the liquid level of right side of $U$-tube by