Figure H-1

-When an iron ring is heated, the hole becomes
A)smaller,
B)larger,
C)neither smaller nor larger, Which follows from the fact that
D)expansion takes place inward toward the center of the ring as well as outward.
E)expansion takes place in all directions.
F)the surrounding air and the iron expand at different rates.

Question

Figure H-1
 
-When an iron ring is heated, the hole becomes
A)smaller, 
B)larger, 
C)neither smaller nor larger, Which follows from the fact that 
D)expansion takes place inward toward the center of the ring as well as outward. 
E)expansion takes place in all directions. 
F)the surrounding air and the iron expand at different rates.

Quizplus · Accepted Answer

When an iron ring is heated, it expands in all directions due to the increase in the kinetic energy of its atoms, making the hole larger. This is because expansion occurs uniformly in all parts of the object, including both the material of the ring and the space of the hole, as per the principle that expansion takes place in all directions.

Figure H-1 -When an Iron Ring Is Heated, the Hole Becomes