| कॉलम $-I$ | कॉलम $-II$ |
| $(a) \vec A \cdot \vec B = 0$ | $(i) \theta = 0^\circ$ |
| $(b) \vec A \cdot \vec B = +8$ | $(ii) \theta = 90^\circ$ |
| $(c) \vec A \cdot \vec B = 4$ | $(iii) \theta = 180^\circ$ |
| $(d) \vec A \cdot \vec B = -8$ | $(iv) \theta = 60^\circ$ |
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