MHT-CET (DEMO) CLASS 11 PHYSICS THERMODYNAMICS PAPER

Two substances $$A$$ and $$B$$ of equal mass $$m$$ are heated at uniform rate of $$6 \mathrm{cal}^{-1}$$ under similar conditions. A graph between temperature and time is shown in figure. Ratio of heat absorbed $$H_{A} / H_{B}$$ by them for complete fusion is

Out of the following, in which vessel will the temperature of the solution be higher after the salt is completely dissolved.

Fire is extinguished more effectively by

An ideal thermometer should have

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

During illness an 80 kg man ran a fever of $$102.2^{\circ} \mathrm{F}$$ instead of normal body temperature of $$98.6^{\circ} \mathrm{F}$$. Assuming that human body is mostly water, how much heat is required to raise his temperature by that amount

Two holes of unequal diameters $$d_{1}$$ and $$d_{2}\left(d_{1}>d_{2}\right)$$ are cut in a metal sheet. If the sheet is heated

If earth suddenly stops rotating about its own axis, the increase in it’s temperature will be

Latent heat of ice is $$80 \mathrm{cal} / \mathrm{gm}$$. A man melts 60 g of ice by chewing in 1 minute. His power is

A faulty thermometer has its lower fixed point marked as $$-10^{\circ} \mathrm{C}$$ and upper fixed point marked as $$110^{\circ}$$ and upper fixed point marked as $$110^{\circ}$$. If the temperature of the body shown in this scale is $$62^{\circ}$$, the temperature shown on the Celsius scale is

If there are no heat losses, the heat released by the condensation of $$x \mathrm{gm}$$ of steam at $$100^{\circ} \mathrm{C}$$ into water at $$100^{\circ} \mathrm{C}$$ can be used to convert $$y \mathrm{gm}$$ of ice at $$0^{\circ} \mathrm{C}$$ into water at $$100^{\circ} \mathrm{C}$$. Then the ratio $$y: x$$ is nearly

The figure shows a glass tube (linear co-efficient of expansion is $$\alpha$$ ) completely filled with a liquid of volume expansion co-efficient $$\gamma$$. On heating length of the liquid column does not change. Choose the correct relation between $$\gamma$$ and $$\alpha$$

Water falls from a height 500 m . What is the rise in temperature of water at bottom if whole energy remains in the water

A steel ball of mass 0.1 kg falls freely from a height of 10 m and bounces to a height of 5.4 m from the ground. If the dissipated energy in this process is absorbed by the ball, the rise in its temperature is
(Specific heat of steel $$=460$$ Joule $$-\mathrm{kg}^{-10} \mathrm{C}^{-1}, g=10 \mathrm{~ms}^{-2}$$ )

1 gm of ice at $$0^{\circ} \mathrm{C}$$ is mixed with 1 gm of water at $$100^{\circ} \mathrm{C}$$ the resulting temperature will be

Two substances $$A$$ and $$B$$ of equal mass $$m$$ are heated at uniform rate of $$6 \mathrm{cal}^{-1}$$ under similar conditions. A graph between temperature and time is shown in figure. Ratio of heat absorbed $$H_{A} / H_{B}$$ by them for complete fusion is

Out of the following, in which vessel will the temperature of the solution be higher after the salt is completely dissolved.

Fire is extinguished more effectively by

An ideal thermometer should have

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

During illness an 80 kg man ran a fever of $$102.2^{\circ} \mathrm{F}$$ instead of normal body temperature of $$98.6^{\circ} \mathrm{F}$$. Assuming that human body is mostly water, how much heat is required to raise his temperature by that amount

Two holes of unequal diameters $$d_{1}$$ and $$d_{2}\left(d_{1}>d_{2}\right)$$ are cut in a metal sheet. If the sheet is heated

If earth suddenly stops rotating about its own axis, the increase in it’s temperature will be

Latent heat of ice is $$80 \mathrm{cal} / \mathrm{gm}$$. A man melts 60 g of ice by chewing in 1 minute. His power is

A faulty thermometer has its lower fixed point marked as $$-10^{\circ} \mathrm{C}$$ and upper fixed point marked as $$110^{\circ}$$ and upper fixed point marked as $$110^{\circ}$$. If the temperature of the body shown in this scale is $$62^{\circ}$$, the temperature shown on the Celsius scale is

If there are no heat losses, the heat released by the condensation of $$x \mathrm{gm}$$ of steam at $$100^{\circ} \mathrm{C}$$ into water at $$100^{\circ} \mathrm{C}$$ can be used to convert $$y \mathrm{gm}$$ of ice at $$0^{\circ} \mathrm{C}$$ into water at $$100^{\circ} \mathrm{C}$$. Then the ratio $$y: x$$ is nearly

The figure shows a glass tube (linear co-efficient of expansion is $$\alpha$$ ) completely filled with a liquid of volume expansion co-efficient $$\gamma$$. On heating length of the liquid column does not change. Choose the correct relation between $$\gamma$$ and $$\alpha$$

Water falls from a height 500 m . What is the rise in temperature of water at bottom if whole energy remains in the water

A steel ball of mass 0.1 kg falls freely from a height of 10 m and bounces to a height of 5.4 m from the ground. If the dissipated energy in this process is absorbed by the ball, the rise in its temperature is
(Specific heat of steel $$=460$$ Joule $$-\mathrm{kg}^{-10} \mathrm{C}^{-1}, g=10 \mathrm{~ms}^{-2}$$ )

1 gm of ice at $$0^{\circ} \mathrm{C}$$ is mixed with 1 gm of water at $$100^{\circ} \mathrm{C}$$ the resulting temperature will be