A thin walled cylindrical metal vessel of linear coefficient of expansion $10^{-3} $ $^o C^{-1}$ contains benzenr of volume expansion coefficient $10^{-3}$ $^o C^{-1}$. If the vessel and its contents are now heated by $10^o C,$ the pressure due to the liquid at the bottom.
increases by $2\%$
decreases by $1\%$
decreases by $2\%$
remains unchanged
A thin copper wire of length $L$ increase in length by $1\%$ when heated from temperature $T_1$ to $T_2$. What is the percentage change in area when a thin copper plate having dimensions $2L\times L$ is heated from $T_1$ to $T_2$ ? ....... $\%$
A cylindrical metal rod of length $L_0$ is shaped into a ring with a small gap as shown. On heating the system
The coefficient of linear expansion of crystal in one direction is ${\alpha _1}$ and that in every direction perpendicular to it is ${\alpha _2}$. The coefficient of cubical expansion is
A rod is placed on a smooth horizontal surface. The stress developed when temperature is increased by $40\,^oC$
$[\alpha = 5\, \times\, 10^{-5}\,^oC^{-1},\,\, \gamma = 5\, \times\, 10^{11}\,\, N/m^2]$
A hole is drilled in a copper sheet. The diameter of hole is $4.24 \,cm$ at $27.0^{\circ} C$. Diameter of the hole when it is heated to $35^{\circ} C$ is ...........