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KVPY Aptitude Test - Stream SA

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Two large holes are cut in a metal sheet. If this is heated, distances $A B$ and $B C$ , (as shown)

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Important Questions on Calorimetry and Thermal Expansion

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Physics>Chapter 12 - Calorimetry and Thermal Expansion>Exercise 1>Q 18

Expansion during heating -

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Physics>Chapter 12 - Calorimetry and Thermal Expansion>Exercise 1>Q 19

A difference of temperature of

25 ° C

is equivalent to a difference of

HARD

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Physics>Chapter 12 - Calorimetry and Thermal Expansion>Exercise 1>Q 20

A one litre glass flask contains some mercury. It is found that at different temperatures the volume of air inside the flask remains the same. What is the volume of mercury in this flask if coefficient of linear expansion of glass is

9 \times 10^{- 6} ° C^{- 1}

while of volume expansion of mercury is

1.8 \times 10^{- 4} ° C^{- 1}

HARD

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Physics>Chapter 12 - Calorimetry and Thermal Expansion>Exercise 1>Q 21

A rod of length

20 cm

is made of metal. It expands by

0.075 cm

when its temperature is raised from

0 ° C

100 ° C

. another rod of a different metal

B

having the same length expands by

0.045 cm

for the same change in temperature. A third rod of the same length is composed of two parts, one of metal

A

and the other of metal

B

. This rod expands by

0.060 cm

for the same change in temperature. The portion made of metal

A

has the length:

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Physics>Chapter 12 - Calorimetry and Thermal Expansion>Exercise 1>Q 22

Steam is passed into

22 gm

of water at

20 ° C

. The mass of water that will be present when the water acquires a temperature of

90 ° C

(

latent heat of steam is

540 cal {gm}^{- 1})

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Physics>Chapter 12 - Calorimetry and Thermal Expansion>Exercise 1>Q 23

80 gm

of water at

30 ° C

is poured on a large block of ice at

0 ° C

. The mass of ice that melts is

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Physics>Chapter 12 - Calorimetry and Thermal Expansion>Exercise 1>Q 24

Compared to a burn due to water at

100 ° C

a burn due to steam at

100 ° C

EASY

KVPY Aptitude Test - Stream SA

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SA Physics>Chapter 12 - Calorimetry and Thermal Expansion>Exercise 1>Q 25

The thermal capacity of

40 gm

of aluminium

(

specific heat

= 0.2 cal {gm}^{- 1} {}^{\circ}C^{- 1})

Two large holes are cut in a metal sheet. If this is heated, distances AB and BC, (as shown)

Important Questions on Calorimetry and Thermal Expansion

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Two large holes are cut in a metal sheet. If this is heated, distances $A B$ and $B C$ , (as shown)