The Coefficient of Linear Expansion of Steel Is 12 ×

question 24

Multiple Choice

The coefficient of linear expansion of steel is 12 × 10^-6 K^-1.What is the change in length of a 25-m steel bridge span when it undergoes a temperature change of 40 K from winter to summer?

• A)1.2 cm
• B)1.4 cm
• C)1.6 cm
• D)1.8 cm
• E)2.0 cm

---

Definitions:

Secreted

Secretion is the process by which substances are produced and discharged from cells or glands, often for a particular function in the body or plant.

Farsightedness

A common vision condition where distant objects are seen more clearly than close ones, also known as hyperopia.

Normal Eyeball

An eyeball that has proper shape and size, allowing for clear vision and normal focusing ability without the aid of corrective lenses.

Ciliary Muscles

The ring of smooth muscle fibers in the eye's middle layer that controls the lens's shape for focusing.