146550 A bimetallic strip is made of aluminium and steel $\left(\alpha_{\mathrm{Al}}>\alpha_{\text {steel }}\right)$. On heating the strip will

146551 A heating coil is used to heat water in a container from $15^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$ in 20 minutes. Two such coils are then joined in series to heat the same amount of water for the same temperature difference from the same constant voltage source. The time taken now is

146553 How much heat energy in joules must be supplied to $14 \mathrm{~g}$ of nitrogen at room temperature to raise its temperature by $40^{\circ} \mathrm{C}$ at constant pressure? (Mol. wt. of $\mathrm{N}_{2}=28 \mathrm{~g}, \mathrm{R}=$ gas constant)

146554 A steel meter scale is to be ruled so that millimetre intervals are accurate within about $5 \times 10^{-5} \mathrm{~m}$ at a certain temperature. The maximum temperature variation allowable during the ruling is (coefficient of linear expansion of steel $\alpha=10 \times 10^{-6} \mathrm{~K}^{-1}$ )

146555 In a compensated pendulum two rods of different metals are used with their lengths in ratio of $2: 3$. The coefficient of linear expansions for metals in the ratio is

146550 A bimetallic strip is made of aluminium and steel $\left(\alpha_{\mathrm{Al}}>\alpha_{\text {steel }}\right)$. On heating the strip will

146551 A heating coil is used to heat water in a container from $15^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$ in 20 minutes. Two such coils are then joined in series to heat the same amount of water for the same temperature difference from the same constant voltage source. The time taken now is

146553 How much heat energy in joules must be supplied to $14 \mathrm{~g}$ of nitrogen at room temperature to raise its temperature by $40^{\circ} \mathrm{C}$ at constant pressure? (Mol. wt. of $\mathrm{N}_{2}=28 \mathrm{~g}, \mathrm{R}=$ gas constant)

146554 A steel meter scale is to be ruled so that millimetre intervals are accurate within about $5 \times 10^{-5} \mathrm{~m}$ at a certain temperature. The maximum temperature variation allowable during the ruling is (coefficient of linear expansion of steel $\alpha=10 \times 10^{-6} \mathrm{~K}^{-1}$ )

146555 In a compensated pendulum two rods of different metals are used with their lengths in ratio of $2: 3$. The coefficient of linear expansions for metals in the ratio is

146550 A bimetallic strip is made of aluminium and steel $\left(\alpha_{\mathrm{Al}}>\alpha_{\text {steel }}\right)$. On heating the strip will

146551 A heating coil is used to heat water in a container from $15^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$ in 20 minutes. Two such coils are then joined in series to heat the same amount of water for the same temperature difference from the same constant voltage source. The time taken now is

146553 How much heat energy in joules must be supplied to $14 \mathrm{~g}$ of nitrogen at room temperature to raise its temperature by $40^{\circ} \mathrm{C}$ at constant pressure? (Mol. wt. of $\mathrm{N}_{2}=28 \mathrm{~g}, \mathrm{R}=$ gas constant)

146554 A steel meter scale is to be ruled so that millimetre intervals are accurate within about $5 \times 10^{-5} \mathrm{~m}$ at a certain temperature. The maximum temperature variation allowable during the ruling is (coefficient of linear expansion of steel $\alpha=10 \times 10^{-6} \mathrm{~K}^{-1}$ )

146555 In a compensated pendulum two rods of different metals are used with their lengths in ratio of $2: 3$. The coefficient of linear expansions for metals in the ratio is

146550 A bimetallic strip is made of aluminium and steel $\left(\alpha_{\mathrm{Al}}>\alpha_{\text {steel }}\right)$. On heating the strip will

146551 A heating coil is used to heat water in a container from $15^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$ in 20 minutes. Two such coils are then joined in series to heat the same amount of water for the same temperature difference from the same constant voltage source. The time taken now is

146553 How much heat energy in joules must be supplied to $14 \mathrm{~g}$ of nitrogen at room temperature to raise its temperature by $40^{\circ} \mathrm{C}$ at constant pressure? (Mol. wt. of $\mathrm{N}_{2}=28 \mathrm{~g}, \mathrm{R}=$ gas constant)

146554 A steel meter scale is to be ruled so that millimetre intervals are accurate within about $5 \times 10^{-5} \mathrm{~m}$ at a certain temperature. The maximum temperature variation allowable during the ruling is (coefficient of linear expansion of steel $\alpha=10 \times 10^{-6} \mathrm{~K}^{-1}$ )

146555 In a compensated pendulum two rods of different metals are used with their lengths in ratio of $2: 3$. The coefficient of linear expansions for metals in the ratio is

146550 A bimetallic strip is made of aluminium and steel $\left(\alpha_{\mathrm{Al}}>\alpha_{\text {steel }}\right)$. On heating the strip will

146551 A heating coil is used to heat water in a container from $15^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$ in 20 minutes. Two such coils are then joined in series to heat the same amount of water for the same temperature difference from the same constant voltage source. The time taken now is

146553 How much heat energy in joules must be supplied to $14 \mathrm{~g}$ of nitrogen at room temperature to raise its temperature by $40^{\circ} \mathrm{C}$ at constant pressure? (Mol. wt. of $\mathrm{N}_{2}=28 \mathrm{~g}, \mathrm{R}=$ gas constant)

146554 A steel meter scale is to be ruled so that millimetre intervals are accurate within about $5 \times 10^{-5} \mathrm{~m}$ at a certain temperature. The maximum temperature variation allowable during the ruling is (coefficient of linear expansion of steel $\alpha=10 \times 10^{-6} \mathrm{~K}^{-1}$ )

146555 In a compensated pendulum two rods of different metals are used with their lengths in ratio of $2: 3$. The coefficient of linear expansions for metals in the ratio is