142723 A body of density $d_{1}$ is counter poised by $M g$ of weights of density $d_{2}$ in air of density $d$. Then the true mass of the body is

142725 A metal plate of area $100 \mathrm{~cm}^{2}$ is lying on a liquid layer of thickness $2 \mathrm{~mm}$. If the coefficient of viscosity of the liquid is $2 \mathrm{~N}$. $\mathrm{s}^{-2} \mathrm{~m}^{-2}$, then find the minimum horizontal force required to move the plate with a speed of $1 \mathrm{~cm} . \mathrm{s}^{-1}$

142727 Find the Young's modulus of the wire whose stress-strain curve is as shown in the following figure:

142728 An air bubble of radius $1.0 \mathrm{~cm}$ rises with a constant speed of $3.5 \mathrm{~mm} \mathrm{~s}^{-1}$ through a liquid of density $1.75 \times 10^{3} \mathrm{kgm}^{-3}$. Neglecting the density of air, the coefficient of viscosity of the liquid is $\mathbf{k g m}^{-1} \mathbf{s}^{-1}$

142729 A flat plate of area $10 \mathrm{~cm}^{2}$ is separated and a large plate by a layer of Glycerine $1 \mathrm{~mm}$ thick. If the coefficient of viscosity of Glycerine is $\mathbf{2 0}$ poise. The force required to keep the plate moving the velocity of $1 \mathrm{~cm} . \mathrm{s}^{-1}$ is

142723 A body of density $d_{1}$ is counter poised by $M g$ of weights of density $d_{2}$ in air of density $d$. Then the true mass of the body is

142725 A metal plate of area $100 \mathrm{~cm}^{2}$ is lying on a liquid layer of thickness $2 \mathrm{~mm}$. If the coefficient of viscosity of the liquid is $2 \mathrm{~N}$. $\mathrm{s}^{-2} \mathrm{~m}^{-2}$, then find the minimum horizontal force required to move the plate with a speed of $1 \mathrm{~cm} . \mathrm{s}^{-1}$

142727 Find the Young's modulus of the wire whose stress-strain curve is as shown in the following figure:

142728 An air bubble of radius $1.0 \mathrm{~cm}$ rises with a constant speed of $3.5 \mathrm{~mm} \mathrm{~s}^{-1}$ through a liquid of density $1.75 \times 10^{3} \mathrm{kgm}^{-3}$. Neglecting the density of air, the coefficient of viscosity of the liquid is $\mathbf{k g m}^{-1} \mathbf{s}^{-1}$

142729 A flat plate of area $10 \mathrm{~cm}^{2}$ is separated and a large plate by a layer of Glycerine $1 \mathrm{~mm}$ thick. If the coefficient of viscosity of Glycerine is $\mathbf{2 0}$ poise. The force required to keep the plate moving the velocity of $1 \mathrm{~cm} . \mathrm{s}^{-1}$ is

142723 A body of density $d_{1}$ is counter poised by $M g$ of weights of density $d_{2}$ in air of density $d$. Then the true mass of the body is

142725 A metal plate of area $100 \mathrm{~cm}^{2}$ is lying on a liquid layer of thickness $2 \mathrm{~mm}$. If the coefficient of viscosity of the liquid is $2 \mathrm{~N}$. $\mathrm{s}^{-2} \mathrm{~m}^{-2}$, then find the minimum horizontal force required to move the plate with a speed of $1 \mathrm{~cm} . \mathrm{s}^{-1}$

142727 Find the Young's modulus of the wire whose stress-strain curve is as shown in the following figure:

142728 An air bubble of radius $1.0 \mathrm{~cm}$ rises with a constant speed of $3.5 \mathrm{~mm} \mathrm{~s}^{-1}$ through a liquid of density $1.75 \times 10^{3} \mathrm{kgm}^{-3}$. Neglecting the density of air, the coefficient of viscosity of the liquid is $\mathbf{k g m}^{-1} \mathbf{s}^{-1}$

142729 A flat plate of area $10 \mathrm{~cm}^{2}$ is separated and a large plate by a layer of Glycerine $1 \mathrm{~mm}$ thick. If the coefficient of viscosity of Glycerine is $\mathbf{2 0}$ poise. The force required to keep the plate moving the velocity of $1 \mathrm{~cm} . \mathrm{s}^{-1}$ is

142723 A body of density $d_{1}$ is counter poised by $M g$ of weights of density $d_{2}$ in air of density $d$. Then the true mass of the body is

142725 A metal plate of area $100 \mathrm{~cm}^{2}$ is lying on a liquid layer of thickness $2 \mathrm{~mm}$. If the coefficient of viscosity of the liquid is $2 \mathrm{~N}$. $\mathrm{s}^{-2} \mathrm{~m}^{-2}$, then find the minimum horizontal force required to move the plate with a speed of $1 \mathrm{~cm} . \mathrm{s}^{-1}$

142727 Find the Young's modulus of the wire whose stress-strain curve is as shown in the following figure:

142728 An air bubble of radius $1.0 \mathrm{~cm}$ rises with a constant speed of $3.5 \mathrm{~mm} \mathrm{~s}^{-1}$ through a liquid of density $1.75 \times 10^{3} \mathrm{kgm}^{-3}$. Neglecting the density of air, the coefficient of viscosity of the liquid is $\mathbf{k g m}^{-1} \mathbf{s}^{-1}$

142729 A flat plate of area $10 \mathrm{~cm}^{2}$ is separated and a large plate by a layer of Glycerine $1 \mathrm{~mm}$ thick. If the coefficient of viscosity of Glycerine is $\mathbf{2 0}$ poise. The force required to keep the plate moving the velocity of $1 \mathrm{~cm} . \mathrm{s}^{-1}$ is

142723 A body of density $d_{1}$ is counter poised by $M g$ of weights of density $d_{2}$ in air of density $d$. Then the true mass of the body is

142725 A metal plate of area $100 \mathrm{~cm}^{2}$ is lying on a liquid layer of thickness $2 \mathrm{~mm}$. If the coefficient of viscosity of the liquid is $2 \mathrm{~N}$. $\mathrm{s}^{-2} \mathrm{~m}^{-2}$, then find the minimum horizontal force required to move the plate with a speed of $1 \mathrm{~cm} . \mathrm{s}^{-1}$

142727 Find the Young's modulus of the wire whose stress-strain curve is as shown in the following figure:

142728 An air bubble of radius $1.0 \mathrm{~cm}$ rises with a constant speed of $3.5 \mathrm{~mm} \mathrm{~s}^{-1}$ through a liquid of density $1.75 \times 10^{3} \mathrm{kgm}^{-3}$. Neglecting the density of air, the coefficient of viscosity of the liquid is $\mathbf{k g m}^{-1} \mathbf{s}^{-1}$

142729 A flat plate of area $10 \mathrm{~cm}^{2}$ is separated and a large plate by a layer of Glycerine $1 \mathrm{~mm}$ thick. If the coefficient of viscosity of Glycerine is $\mathbf{2 0}$ poise. The force required to keep the plate moving the velocity of $1 \mathrm{~cm} . \mathrm{s}^{-1}$ is