$A$ transverse wave strikes against a rigid wall. What happens to its phase and velocity?
- AIts phase changes by $180^{\circ}$,but velocity does not change.
- BIts phase does not change,but velocity changes.
- CIts velocity changes and phase changes by $180^{\circ}$.
- DNothing can be predicted about changes in its velocity and phase.
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Match Column - $A$ with Column - $B$.
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| $(b)$ Maximum change in pressure | $(ii)$ Nodal point |
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