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The intensity of solar radiation of the ...

The intensity of solar radiation of the earths surface is `1KWm^(-2)`. The power entering the pupil of an eye of diameter `0.5 cm` is

A

`39.2 mw`

B

`19.6 mw`

C

`9.8 mw`

D

`4.9 mw`

Text Solution

Verified by Experts

The correct Answer is:
B
`P=IA=IpiR^(2)`
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