143153 In a vehicle lifter the enclosed gas exerts a force ' $F$ ' on a small piston of $8 \mathrm{~cm}$ diameter. The pressure is transmitted to a second piston of diameter $24 \mathrm{~cm}$. If the mass of the vehicle to be lifted is $1400 \mathrm{~kg}$, then $\mathrm{F}$ must at least be - $(\mathrm{g}$ $=10 \mathrm{~m} \cdot \mathrm{s}^{-2}$

143154 A cylindrical tank has a hole of $1 \mathrm{~cm}^{2}$ in its bottom. If the water is allowed to flow into the tank from a tube above it at the rate of 70 $\mathrm{cm}^{3} \mathrm{~s}^{-1}$, then the maximum height up to which water can rise in the tank is -

143155 The density of air in atmosphere decreases with height and can be expressed by the relation $\rho=\rho_{0} \mathrm{e}^{-\alpha \mathrm{h}}$, where $\rho_{0}$ is the density at sea level, $\alpha$ is a constant and $h$ is the height. The atmospheric pressure at the sea level is

143157 A steel ball is dropped in oil

143153 In a vehicle lifter the enclosed gas exerts a force ' $F$ ' on a small piston of $8 \mathrm{~cm}$ diameter. The pressure is transmitted to a second piston of diameter $24 \mathrm{~cm}$. If the mass of the vehicle to be lifted is $1400 \mathrm{~kg}$, then $\mathrm{F}$ must at least be - $(\mathrm{g}$ $=10 \mathrm{~m} \cdot \mathrm{s}^{-2}$

143154 A cylindrical tank has a hole of $1 \mathrm{~cm}^{2}$ in its bottom. If the water is allowed to flow into the tank from a tube above it at the rate of 70 $\mathrm{cm}^{3} \mathrm{~s}^{-1}$, then the maximum height up to which water can rise in the tank is -

143155 The density of air in atmosphere decreases with height and can be expressed by the relation $\rho=\rho_{0} \mathrm{e}^{-\alpha \mathrm{h}}$, where $\rho_{0}$ is the density at sea level, $\alpha$ is a constant and $h$ is the height. The atmospheric pressure at the sea level is

143157 A steel ball is dropped in oil

143153 In a vehicle lifter the enclosed gas exerts a force ' $F$ ' on a small piston of $8 \mathrm{~cm}$ diameter. The pressure is transmitted to a second piston of diameter $24 \mathrm{~cm}$. If the mass of the vehicle to be lifted is $1400 \mathrm{~kg}$, then $\mathrm{F}$ must at least be - $(\mathrm{g}$ $=10 \mathrm{~m} \cdot \mathrm{s}^{-2}$

143154 A cylindrical tank has a hole of $1 \mathrm{~cm}^{2}$ in its bottom. If the water is allowed to flow into the tank from a tube above it at the rate of 70 $\mathrm{cm}^{3} \mathrm{~s}^{-1}$, then the maximum height up to which water can rise in the tank is -

143155 The density of air in atmosphere decreases with height and can be expressed by the relation $\rho=\rho_{0} \mathrm{e}^{-\alpha \mathrm{h}}$, where $\rho_{0}$ is the density at sea level, $\alpha$ is a constant and $h$ is the height. The atmospheric pressure at the sea level is

143157 A steel ball is dropped in oil

143153 In a vehicle lifter the enclosed gas exerts a force ' $F$ ' on a small piston of $8 \mathrm{~cm}$ diameter. The pressure is transmitted to a second piston of diameter $24 \mathrm{~cm}$. If the mass of the vehicle to be lifted is $1400 \mathrm{~kg}$, then $\mathrm{F}$ must at least be - $(\mathrm{g}$ $=10 \mathrm{~m} \cdot \mathrm{s}^{-2}$

143154 A cylindrical tank has a hole of $1 \mathrm{~cm}^{2}$ in its bottom. If the water is allowed to flow into the tank from a tube above it at the rate of 70 $\mathrm{cm}^{3} \mathrm{~s}^{-1}$, then the maximum height up to which water can rise in the tank is -

143155 The density of air in atmosphere decreases with height and can be expressed by the relation $\rho=\rho_{0} \mathrm{e}^{-\alpha \mathrm{h}}$, where $\rho_{0}$ is the density at sea level, $\alpha$ is a constant and $h$ is the height. The atmospheric pressure at the sea level is

143157 A steel ball is dropped in oil