A Light Source Radiates 60

question 52

Multiple Choice

A light source radiates 60.0 W of single-wavelength sinusoidal light uniformly in all directions.What is the average intensity of the light from this bulb at a distance of 0.400 m from the bulb?

• A)14.9 W/m²
• B)37.2 W/m²
• C)27.4 W/m²
• D)11.9 W/m²
• E)29.8 W/m²

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