An EM wave of intensity \(I\) falls on a surface kept in a vacuum and exerts radiation pressure \(P\) on it. Which of the following are true?
(a) | Radiation pressure is \(\frac{I}{c}\) if the wave is totally absorbed. |
(b) | Radiation pressure is \(\frac{I}{c}\) if the wave is totally reflected. |
(c) | Radiation pressure is \(\frac{2I}{c}\) if the wave is totally reflected. |
(d) | Radiation pressure is in the range \(\frac{I}{c}<P<\frac{2I}{c}\) for real surfaces. |
1. (a, b, c)
2. (b, c, d)
3. (a, c, d)
4. (c, d)