If beam power is 0.05 watts and beam cross-sectional area is 0.01 square meters, what is the intensity?

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Multiple Choice

If beam power is 0.05 watts and beam cross-sectional area is 0.01 square meters, what is the intensity?

Explanation:
Intensity is the power distributed over the beam’s cross-sectional area. It’s found by dividing the power by the area, giving units of watts per square meter. Here, 0.05 watts spread over 0.01 square meters equals 0.05 / 0.01 = 5 W/m^2. So the beam’s power density is 5 watts per square meter.

Intensity is the power distributed over the beam’s cross-sectional area. It’s found by dividing the power by the area, giving units of watts per square meter. Here, 0.05 watts spread over 0.01 square meters equals 0.05 / 0.01 = 5 W/m^2. So the beam’s power density is 5 watts per square meter.

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