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Light with an energy flux of 20W//cm^2 f...

Light with an energy flux of `20W//cm^2` falls on a non-reflecting surface at normal incidence. If the surface has an area of `30cm^2`, the total momentum delivered (for complete absorption) during 30 minutes is:

A

`36 xx 10^-5 kgm//s`

B

`36 xx 10^-4 kgm//s`

C

`108 xx 10^4 kgm//s`

D

`1.08 xx 10^7 kgm//s`

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