Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

MEDIUM

Earn 100

Explain the properties of liquid suitable for use in thermometer. Name two most commonly used thermometric liquids.

Important Questions on Heat Phenomena

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

Mercury is often used in clinical thermometers. Which one of the following properties of mercury is not a reason for this?

HARD

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

A certain liquid has a melting point of

- 50 ° C

and a boiling point of

150 ° C

. A thermometer is designed with this liquid and its melting and boiling points are designated at

0 ° L

and

100 ° L

. The melting and boiling points of water on this scale are

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

Assertion: Water is considered unsuitable for use in thermometers.

Reason: This is due to small specific heat and high thermal conductivity.

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

Mercury boils at

367 ° C

. However, mercury thermometers are made such that they can measure temperature upto

500 ° C

. This is done by,

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

Thermometer with spherical bulbs are less sensitive than the thermometer with cylindrical bulbs because the surface area of the sphere is ......... than the surface area of the cylinder. (fill in the blanks)

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

Explain how Galileo's thermometer makes use of thermal expansion.

HARD

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

A certain liquid has a melting point of

- 50 ° C

and a boiling point of

150 ° C

. A thermometer is designed with this liquid and its melting and boiling points are designated as

0 ° L

and

100 ° L .

The melting and boiling points of water on this scale are

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

Give one word for each of the following:

All the temperatures, from lowest to highest, which a thermometer can measure

MEDIUM

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

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

$X = {x | x$ is a prime number between $80$ and $100}$

$Y = {y | y$ is an odd number between $90$ and $100}$

MEDIUM

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

The U.F.P. and L.F.P. of a thermometer are wrongly marked as

96 ° C

and

- 2 ° C

respectively. What is the reading of this thermometer if a correct thermometer reads

50 ° C ?

MEDIUM

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

If a thermometer reads freezing point of water as

20 ° C

and boiling point as

150 ° C

, how much thermometer would read when the actual temperature is

60 ° C ?

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

Write step-by-step instructions for the calibration of a thermometer using the Celsius scale.

MEDIUM

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

If a thermometer reads freezing point of water as

20 ° C

and boiling point as

150 ° C

, how much will the thermometer read when the actual temperature is

60 ° C

?

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

Assertion: Gas thermometers are more sensitive than liquid thermometers.

Reason: Coefficient of thermal expansion of gases is more than liquid.

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

A faulty thermometer has its fixed points marked 5 and 95. When this thermometer reads 68, the correct temperature in Celsius is

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

The diagram shows two liquid-in-glass thermometers.

Question Image

Which is more sensitive? Explain how you can tell.

HARD

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

A certain liquid has a melting point of

- 50 ° C

and a boiling point of

150 ° C

. A thermometer is designed with this liquid and its melting and boiling points are designated as

0 ° L

and

100 ° L .

The melting and boiling points of water on this scale are

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

Cotyledons are also called-

EASY

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

The temperature of the sun is measured with

HARD

Physics>Heat and Thermodynamics>Heat Phenomena>Thermometers and Temperature Scales

Can the bulb of a thermometer be made of an adiabatic wall?