Question

Light with an energy flux of 20 W/cm² falls on a non-reflecting
surface at normal incidence. If the surface has an area of 30
cm², the total momentum delivered (for complete absorption)
during 30 min is
(a) 36 × 10⁻⁵ kg-m/s (b) 36 × 10⁻⁴ kg-m/s
(c) 108 × 10⁴ kg-m/s (d) 1.08 × 10⁷ kg-m/s

Answer 1

Answer:

I don't understand

Explanation:

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