About 5% of the power of a 100 W light bulb is converted to visible radiation . What is the average intensity of visible radiation at a distance of 10

Question

About 5% of the power of a 100 W light bulb is converted to visible radiation . What is the average intensity of visible radiation at a distance of 10

About 5% of the power of a 100 W light bulb is converted to visible radiation . What is the average intensity of visible radiation at a distance of 10 m ?
Assume that the radiation is emitted isotropically and neglect reflection .

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

`I=(100xx(5//100))/(4pi(10)^(2))=4xx10^(-3)W//m^(2)`

4 views Answered 2023-02-05 15:29