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Two particles are executing SHM of the same amplitude A and frequency along the x-axis. Their mean position is separated by `X_0` (where `X_0>A)`. If maximum separation between them is `X_0+2A`, then the phase difference between their motion is:
A. |
`pi/2` |
B. |
`pi` |
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C. |
`pi/3` |
D. |
`pi/4` |