MCQOPTIONS
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MCQOPTIONS
| 1. |
Direct focussing is obtained by deflecting the ion beam along a _________ trajectory through the magnetic field. |
| A. | 120<sup>o</sup> |
| B. | 150<sup>o</sup> |
| C. | 190<sup>o</sup> |
| D. | 180<sup>o</sup> |
| Answer» E. | |