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An EM wave of intensity I falls on a surface kept in vacuum and exerts radiation pressure p on it. Which of the following are true?

a)    radiation pressure is I/c if the wave is totally reflected

b)    radiation pressure is I/c if the wave is totally absorbed

c)    radiation pressure is in the range I/c < p < 2I/c for real surface

d)    radiation pressure is 2I/c if the wave is totally reflected

Answers (1)

Answer: The correct answers are the options,

a) radiation pressure is I/c if the wave is totally absorbed

c) radiation pressure is in the range I/c < p < 2I/c for real surface

d) radiation pressure is 2I/c if the wave is totally reflected

 

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