$A$ light of intensity $12 W m^{-2}$ is incident on a black surface of area $4 cm^2$. The radiation pressure on the surface is
- A$1 \times 10^{-8} Pa$
- B$4 \times 10^{-8} Pa$
- C$1.6 \times 10^{-7} Pa$
- D$4.8 \times 10^{-7} Pa$
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