Test 1: Thermal Expansion and Specific Heat Capacity

Question 1

When the temperature of a rod of copper is increased, its length:

• Aremains the same
• Bincreases
• Cdecreases
• Dbecomes double

Question 2

The amount by which unit length of a material increases when the temperature is raised to 1°C, is called the coefficient of:

• Acubic expansion
• Bvolume expansion
• Clinear expansion
• Dnone of these

Question 3

Thermal expansion is the change in length, area, or volume of a substance when it is:

• Acooled
• Bheated
• Ccompressed
• Dmagnetized

Question 4

When a substance is cooled, its particles lose energy and move closer together, causing the material to contract. This phenomenon is known as:

• Athermal expansion
• Bthermal contraction
• Cevaporation
• Dcondensation

Question 5

According to Fig. 10.1, molecules of an object move with larger amplitude at:

• Alow temperature
• Bhigher temperature
• Cabsolute zero
• Dall temperatures equally