A constant volume thermometer registers a pressure of 1 . 500 × 10 4 Pa at the triple point of water and a pressure of 2 . 050 × 10 4 Pa at the normal boiling point. What is the temperature at the normal boiling point?

In a constant volume gas thermometer, the reading of temperature in Kelvin scale is taken as T ( P ) = 273 . 15 P P T Here, T ( P ) , P and P T represents the temperature corresponding to pressure P and P T is the pressure of gas at the triple point of water. In the given problem, the values are: P T = 1 . 500 × 10 4 Pa ; P = 2 . 050 × 10 4 Pa Substituting these values, we obtain: T ( 2 . 050 × 10 4 Pa ) = 273 . 15 × 2 . 050 × 10 4 1 . 500 × 10 4 = 373 . 3 K

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Important Questions on Thermal Properties of Matter

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

Ice is used in a cooler in order to cool its contents. Which of the following will speed up the cooling process?

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

Pyrometer is a device for measuring

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

Two constant-volume gas thermometers are assembled, one with Nitrogen and the other with Hydrogen. Both contain enough gas so that $p_{3} = 78 kPa$ .
(a) What is the difference between the pressures in the two thermometers if both the bulbs are in boiling water?
(b) Which gas is at higher pressure?

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

The pressure of the gas in a constant volume gas thermometer is

70 kPa

at the ice point. Find the pressure at the steam point.

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

A constant pressure air thermometer gave a reading of

47.5

units of volume when immersed in ice cold water and

67

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

Represent the union of two sets by Venn diagram for each of the following.

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MEDIUM

Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

In a constant volume gas thermometer, the pressure of the working gas is measured by the difference in the levels of mercury in the two arms of a

U

-tube connected to the gas at one end. When the bulb is placed at room temperature

27.0 ° C

, the mercury column in the arm open to atmosphere stands

5.00 cm

above the level of mercury in the other arm. When the bulb is placed in a hot liquid, the difference of mercury levels becomes

45.0 cm

. Calculate the temperature of the liquid. (Atmospheric pressure

= 75.0 cm

of mercury)

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

In a Callender's compensated constant pressure air thermometer, the volume of the bulb is

1800 cc

. When the bulb is kept immersed in a vessel,

200 cc

of mercury has to be poured out. Calculate the temperature of the vessel.

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

A gas thermometer measures the temperature from the variation of pressure of a sample of gas. If the pressure measured at the melting point of lead is

2.20

times the pressure measured at the triple point of water, find the melting point of lead.

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

The pressures of the gas in a constant volume gas thermometer are

80 cm

90 cm

and

100 cm

of mercury at the ice point, the steam point and in a heated wax bath respectively. Find the temperature of the wax bath.

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

A gas thermometer is constructed of two gas-containing bulbs, each in a water bath, as shown in Fig. The pressure difference between the two bulbs is measured by a mercury manometer as shown. Appropriate reservoirs, not shown in the diagram, maintain constant gas volume in the two bulbs. There is no difference in pressure when both baths are at the triple point of water. The pressure difference is $120$ torr when one bath is at the triple point and the other is at the boiling point of water. It shows $80.0$ torr when one bath is at the triple point and the other is at an unknown temperature when measured. What is the unknown temperature?

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

A platinum resistance thermometer reads

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when its resistance is

80 Ω

and

100 ° C

when its resistance is

90 Ω

. Find the temperature at which the resistance is

86 Ω

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

The pressure measured by a constant volume gas thermometer is

40 kPa

at the triple point of water. What will be the pressure measured at the boiling point of water

(100 ° C)

MEDIUM

Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

The resistances of a platinum resistance thermometer at the ice point, the steam point and the boiling point of sulphur are

2.50, 3.50

and

6.50 Ω

respectively. Find the boiling point of sulphur on the platinum scale. The ice point and the steam point measure

0 °

and

100 °

, respectively.

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

A constant volume thermometer registers a pressure of

1.500 \times 10^{4} ​ Pa

at the triple point of water and a pressure of

2.050 \times 10^{4} ​ Pa

at the normal boiling point. What is the temperature at the normal boiling point?

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Physics>Heat and Thermodynamics>Thermal Properties of Matter>Measurement of Temperature

A platinum resistance thermometer reads

0^{o}

when its resistance is

80 Ω

and

100^{o}

when its resistance is

90 Ω

. Find the temperature at the platinum scale at which the resistance is

86 Ω

Is Vicks thermometer accurate?

Important Questions on Thermal Properties of Matter

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