\( \mathrm{P}, \mathrm{Q} \) and \( \mathrm{R} \) are three particles of a medium which lie on t...
0\( \mathrm{P}, \mathrm{Q} \) and \( \mathrm{R} \) are three particles of a medium which lie on the \( \mathrm{x} \)-axis. \( \mathrm{A} \) sine wave of
\( \mathrm{P} \) wavelength \( \lambda \) is travelling through the medium
W in the \( \mathrm{x} \)-direction. \( \mathrm{P} \) and \( \mathrm{Q} \) always have the same speed, while \( P \) and \( R \) always have the same velocity. Then select incorrect statement:-
(1) Distance between \( P \) and \( Q \) can be \( \frac{\lambda}{2} \)
(2) Distance between \( P \) and \( Q \) can be \( \lambda \)
(3) Distance between \( \mathrm{P} \) and \( \mathrm{R} \) can be \( \frac{\lambda}{2} \)
(4) Distance between \( \mathrm{P} \) and \( \mathrm{R} \) can be \( \lambda \)
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