A metallic sphere is heated from 27°C to 200°C Without change of state. Which of the following changes would have resulted from the heating?

Assessment: WAEC SSCE - Physics - 2021 (Objective) Subject: Physics

Question 1 Report

A metallic sphere is heated from 27°C to 200°C Without change of state. Which of the following  changes would have resulted from the heating?

 

   

Answer Details
As the metallic sphere is heated, the temperature increases, causing the metal atoms to vibrate more rapidly. This increased vibration causes an increase in the space between the atoms, resulting in an increase in volume. Since the mass of the sphere remains constant, the increase in volume results in a decrease in density. Therefore, the correct option is: "Its volume increases and its density decreases".
Read lesson note on Temperature And Its Measurement (JAMB)
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