An EM wave of intensity I falls on a surface kept in vacuum and exerts radiation pressure p on it. Which of the following is not true?

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Q. An EM wave of intensity I falls on a surface kept in vacuum and exerts radiation pressure p on it. Which of the following is not true?

(A) Radiation pressure is I/c if the wave is totally absorbed.
(B) Radiation pressure is I/c if the wave is totally reflected.
(C) Radiation pressure is 2I/c if the wave is totally reflected.
(D) Radiation pressure is in the range I/c < p < 2I/c for real surfaces

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✅ Correct Answer: (B) Radiation pressure is I/c if the wave is totally reflected.

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