Which of the Following Exert the Smallest Amount of Radiation

question 41

Multiple Choice

Which of the following exert the smallest amount of radiation pressure?

• A)a 1 mW laser pointer on a 2mm diameter spot 1 m away
• B)a 200 W light bulb on a 4mm diameter spot 10m away
• C)a 100 W light bulb on a 2 mm diameter spot 4 m away
• D)a 200 W light bulb on a 2 mm diameter spot 5 m away
• E)All of the choices exert the same pressure.

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