Helium-Neon Laser Light $\lambda$ = 6328 Nm) Is Sent Through a Single Slit of Width

question 50

Multiple Choice

Helium-neon laser light ( $\lambda$ = 632.8 nm) is sent through a single slit of width 0.41 mm. What is the width of the central maximum on a screen 1.0 m in back of the slit? (1 nm = 10 ^{- 9} m)

• A) 5.3 mm
• B) 4.2 mm
• C) 3.1 mm
• D) 2.0 mm

---

Definitions:

Conservation

The cognitive ability to understand that quantities remain consistent even when their shape or appearance changes, typically developing in the concrete operational stage of cognitive development.

Conservation of Volume

A cognitive development concept stating that a substance's volume remains unchanged even when its appearance changes, understood by children during the concrete operational stage according to Piaget.

Transitional Stage

A developmental phase where an individual moves from one significant stage to another, often involving substantial changes in behavior or role.

Piaget's Conservation Task

Piaget's Conservation Task is a cognitive exercise used by psychologist Jean Piaget to assess a child's ability to understand that quantities remain constant despite changes in shape or arrangement.