EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermal Properties of Matter>TS EAMCET 2020 (9-Sep Shift-1)>Q 4

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Latent heat of vaporisation of water is $22.6 \times 10^{5} J {kg}^{- 1}$ . The amount of heat needed to convert $100 kg$ of water into vapour at $100 ° C$ is

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Important Questions on Thermal Properties of Matter

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermal Properties of Matter>TS EAMCET 2020 (9-Sep Shift-1)>Q 1

A steel rod at

25 ° C

is observed to be

1 m

long when measured by another metal scale which is correct at

0 ° C

. The exact length of steel rod at

0 ° C

is

(α_{steel} = 12 \times 10^{- 6} ° C^{- 1}, α_{metal} = 20 \times 10^{- 6} ° C^{- 1})

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermal Properties of Matter>TS EAMCET 2021 (04-Aug Shift-1)>Q 2

The ratio of linear expansivity to the co-efficient of a real expansion of a rectangular sheet of a solid is

HARD

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermal Properties of Matter>TS EAMCET 2021 (04-Aug Shift-2)>Q 3

A metal ball initially at pressure of

10^{5} P_{a}

is heated from

20 ° C

to

127 ° C

keeping its volume constant. The coefficient of linear expansion of metal is

10^{- 5} (° C^{- 1})

and bulk modulus of metal is

2 \times 10^{11} N m^{- 2}

. The pressure inside the ball becomes

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermal Properties of Matter>TS EAMCET 2020 (9-Sep Shift-1)>Q 4

Latent heat of vaporisation of water is

22.6 \times 10^{5} J {kg}^{- 1}

. The amount of heat needed to convert

100 kg

of water into vapour at

100 ° C

is