Question 1:

Which of the following materials typically expands the most when heated?

Explanation: The correct answer is A) Glass. Glass is known for its high coefficient of thermal expansion, meaning it expands significantly when heated.

Question 2:

Which of the following statements about thermal expansion is true?

Explanation: The correct answer is D) Thermal expansion is reversible and occurs uniformly in all directions. Thermal expansion is the tendency of matter to change in shape, area, and volume in response to changes in temperature. It is reversible and occurs uniformly in all directions.

Question 3:

Which of the following phenomena is a result of thermal expansion?

Explanation: The correct answer is A) Cracking of glass due to rapid heating. When glass is rapidly heated or cooled, the uneven expansion or contraction of different parts of the glass can cause it to crack or shatter.

Question 4:

Which of the following statements about the coefficient of linear expansion is true?

Explanation: The correct answer is C) It depends on the initial length of the material. The coefficient of linear expansion is a material-specific property and depends on the initial length of the material. It represents the fractional change in length per degree Celsius or Kelvin.

Question 5:

Which of the following materials is commonly used to make bimetallic strips for thermostats?

Explanation: The correct answer is A) Copper and brass. Bimetallic strips are made by bonding two different metals with different coefficients of thermal expansion together, such as copper and brass. This arrangement allows the strip to bend when heated or cooled, making it useful in thermostats and temperature-controlled devices.