Almost all solids expand when heated. In some cases, the expansion is advantageous but in some other, it is disadvantageous to us. Explain with illustrations.

Important Questions on Thermal Expansion

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 16 - Thermal Expansion>EXERCISE>Q 3

A bi-metallic strip, consisting of two different metal strips riveted together, is used as a control element in the common thermostat. Explain how it works.

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 16 - Thermal Expansion>EXERCISE>Q 4

Prove that the volume co-efficient of a solid is three times and the co-efficient of surface expansion twice the co-efficient of its linear expansion.

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 16 - Thermal Expansion>EXERCISE>Q 5

What is a compensated pendulum? Describe a compensated pendulum you are familiar with.

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 16 - Thermal Expansion>EXERCISE>Q 6

Cite three instances where the expansion of solids is put to advantageous practical application.

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 16 - Thermal Expansion>EXERCISE>Q 7

A metal rod is rigidly fixed at two diametrically opposite points of a ring made of the same material. Show that the ring will remain circular even when heated.

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 16 - Thermal Expansion>EXERCISE>Q 8

Define co-efficient of linear expansion and co-efficient of volume expansion of a solid. Find out a relation between the two.

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 16 - Thermal Expansion>EXERCISE>Q 9

What do you mean by apparent and real expansion of liquid? What are the definitions of their co-efficients?

EASY

11th West Bengal Board