Q 2228367201.     Light of intensity I is incident on a fixed plane surface at an angle `30^{0}` with normal to the surface. If `50 %` light is reflected and remaining light is absorbed then radiation pressure on the plate is: [Speed of light is c]

A

` \frac{2I}{c}`

B

`\frac{3I}{8c}`

C

`\frac{9I}{8c}`

D

`\frac{I}{4c}`

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