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About 5% of the power of a 100W bulb is ...

About 5% of the power of a 100W bulb is converted to visible radiation. What is the average intensity of visible adiation.
At a distance 1 m from the bulb ?

A

0.4 W/`m^(2)`

B

0.5 W/`m^(2)`

C

0.6 W/`m^(2)`

D

0.8 W/`m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`I = (P)/(4 pi r^(2))`
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