Determine the Amount of Energy Carried in 2

Multiple Choice

Determine the amount of energy carried in 2.0 m of a 4.6-mW He-Ne laser beam if the cross-sectional area of the beam is 4.1 × 10−⁶ m².

A) 1.4E-10 J
B) 4.9E-12 J
C) 3.1E-11 J
D) 6.1E-8 J
E) ​1.0E-11 J