If a 20 W Laser Beam, Which Has an Initial

question 77

Multiple Choice

If a 20 W laser beam, which has an initial diameter of 2.0 mm, spreads out to a diameter of 2.0 m after traveling 10,000 m, what is the final intensity of the beam?

• A) 20 × 10⁻⁴ W/m²
• B) 20 × 10⁻⁶ W/m²
• C) 20 × 10⁻⁸ W/m²
• D) 6.4 W/m²
• E) 6.4 × 10⁻⁶ W/m²

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Definitions:

Social Exchange Theory

Individuals who are treated favourably by others feel obliged to reciprocate by responding positively and returning that favourable treatment in some manner.

Leader-member Exchange (LMX)

A theory centered around the relationship between leaders and their followers, emphasizing the dyadic connections that influence performance and job satisfaction.

Transformational Leadership

A leadership style that inspires positive change in followers, with leaders focusing on transforming others to help each other, to look out for each other, and to be encouraging and harmonious.

Transactional Leadership

Leadership that is based on a straightforward exchange relationship between the leader and the followers.